If a VoLTE capable phone has the mbn files updated to use those of an AT&T white listed phone what would need to happen to get the phone active on AT&T's network?
healerdan said:
If a VoLTE capable phone has the mbn files updated to use those of an AT&T white listed phone what would need to happen to get the phone active on AT&T's network?
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The same as any other device, SIM/carrier unlock the device then activate the device on AT&T using an AT&T SIM.
I know what white list means but I don't understand what that has to do with what you are asking.
Also, just because the device is VoLTE capable, that does not necessarily mean you will be able to use the VoLTE feature on the AT&T network, even if you successfully activate the device on AT&T. VoLTE is controlled and regulated by the carrier, you will not be able to use VoLTE unless AT&T offers VoLTE support for your specific device, if they do not offer VoLTE support for your specific model number, you will not be able to use VoLTE on the AT&T network.
OP, it would help to know which model of phone.
My unlocked N10+ has no issues on AT&T.
Works identically to my AT&T N10+ variant.
Try talking to AT&T advanced technical support.
Droidriven said:
The same as any other device, SIM/carrier unlock the device then activate the device on AT&T using an AT&T SIM.
I know what white list means but I don't understand what that has to do with what you are asking.
Also, just because the device is VoLTE capable, that does not necessarily mean you will be able to use the VoLTE feature on the AT&T network, even if you successfully activate the device on AT&T. VoLTE is controlled and regulated by the carrier, you will not be able to use VoLTE unless AT&T offers VoLTE support for your specific device, if they do not offer VoLTE support for your specific model number, you will not be able to use VoLTE on the AT&T network.
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Right. So VoLTE is a software program which must be present in the firmware of the phone. When AT&T developed their whitelist, they charged manufacturers to "certify" their VoLTE software on the AT&T network. The manufacturer of my phone (ASUS) along with many other manufacturers chose not to pay AT&T for the privilege of AT&T's customers continuing to use their (sometimes) relatively new devices (mine is barely two years old now, and I purchased it outright with the intention of using it for 5-6 years.)
So the software which runs VoLTE from my phone can be altered to work like one of AT&T's 'whitelisted' phones. This is discussed in this guide (as well as others) in which the final few steps has us replace the VoLTE programming with that of a phone from a different manufacturer.
My question is, supposing I can comfortably flash the .mbn file from a phone on AT&T's whitelist AND it works, what other information does AT&T have on my phone which might prevent my phone from connecting to their network? I believe that when I spoke to them and activated my IMEI they asked what phone I had. I think that based on the model information which I told them, it has been disabled*. If I were to tell them "oh, yeah, it's actually a Pixel 4" would there be any other checks which I'd have to spoof/bypass to continue using my phone?
*Also, I'm sure that my phone tried to make a 3g call which their system could have flagged. I'm working to reprogram my phone to only operate with VoLTE, so when I reactivate my phone that flag wouldn't reappear.
blackhawk said:
OP, it would help to know which model of phone.
My unlocked N10+ has no issues on AT&T.
Works identically to my AT&T N10+ variant.
Try talking to AT&T advanced technical support.
Click to expand...
Click to collapse
I didn't feel that my specific model was relevant and figured there's plenty of others wondering a similar thing as AT&T's actions are causing many perfectly good phones to go to disuse. I wanted this thread to generally discuss VoLTE programming and what, if any, recourse a power user might have to program their own non-whitelisted phone to conform with AT&T's network demands.
As you asked, and I would certainly appreciate any personalized assistance, I am using an ASUS ROG ii. The phone is VoLTE capable, and is functional on T-mobile's network, but ASUS apparently didn't want to pay AT&T to "certify" the phone on AT&T's network. I know no stock firmware coming from ASUS will allow me to connect to AT&T's network, but a procedure described in this guide ends with us flashing the .mbn file of a different phone onto ours to utilize "known working" VoLTE software.
I'm sure finding an .mbn that matches both the ROG ii's hardware AND is compatible with AT&T's network isn't going to be a breeze, but assuming that's possible - what other hurdles might I face with AT&T? If I call them to have my phone activated and tell them it's a pixel 4 what happens if I've programmed my phone to communicate on their network as though it were a pixel 4?
I don't think AT&T really cares that much as they're making a killing on the service.
The worst they will do unless it's illegal or specified in writing is to not support the device as far as troubleshooting it. Oddly some techs there will go out of their way sometimes to help you find out of box solutions.
Once you update it you may have to ask them to do a network reset on their end.
I always try to verify a device I'm getting is 100% compatible with their network, if not I return it.
That's one of the first shake down tests I do with a new phone.
This is why
healerdan said:
I didn't feel that my specific model was relevant and figured there's plenty of others wondering a similar thing as AT&T's actions are causing many perfectly good phones to go to disuse. I wanted this thread to generally discuss VoLTE programming and what, if any, recourse a power user might have to program their own non-whitelisted phone to conform with AT&T's network demands.
As you asked, and I would certainly appreciate any personalized assistance, I am using an ASUS ROG ii. The phone is VoLTE capable, and is functional on T-mobile's network, but ASUS apparently didn't want to pay AT&T to "certify" the phone on AT&T's network. I know no stock firmware coming from ASUS will allow me to connect to AT&T's network, but a procedure described in this guide ends with us flashing the .mbn file of a different phone onto ours to utilize "known working" VoLTE software.
I'm sure finding an .mbn that matches both the ROG ii's hardware AND is compatible with AT&T's network isn't going to be a breeze, but assuming that's possible - what other hurdles might I face with AT&T? If I call them to have my phone activated and tell them it's a pixel 4 what happens if I've programmed my phone to communicate on their network as though it were a pixel 4?
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No, telling them you have a different phone isn't going to work. Your phone actually identifies itself to the network based upon a combination of hardware and software information that the network detects or receives from the device remotely, their job on the other end is to set their network up to provide service to the identified device and to identify the device and the service as yours. If you tell them that you have a Pixel 4 and they configure the network on their end to make VoLTE work with Pixel 4 then VoLTE more than likely will not work on your device because the system thinks you have Pixel 4 hardware and software when you actually don't. That is like asking a car parts store for a starter for a Ford engine when you actually need a starter for a Nissan engine, they'll give you what you ask for but it doesn't mean the Ford starter will actually work on the Nissan engine.
Trying to trick them into enabling VoLTE probably won't work, if their system does not offer VoLTE support for your hardware itself, you will not be able to use VoLTE.
It basically boils down to this, control of whether VoLTE will work for you or not is completely in their hands, not yours, it is all done from their end, there isn't really anything you can do from your end.
If you want to use VoLTE on their network, then you need to get a device that is compatible with their VoLTE service and is actually supported by their network.
Even if you find a shortcut to make VoLTE work, somehow, someway, you will not be satisfied with the end result.
Droidriven said:
If you tell them that you have a Pixel 4 and they configure the network on their end to make VoLTE work with Pixel 4 then VoLTE more than likely will not work on your device because the system thinks you have Pixel 4 hardware and software when you actually don't.
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I think you are missing the part where I am using (in this example) programming and hardware from a pixel 4. this is only partly a hardware problem, but there's not as wide an array of different hardware types as you seem to think. a cursory search shows my device utilizes a snapdragon 855, and an X50 modem. The Oneplus 6T, which is permitted on AT&T's network utilizes the exact same hardware. The difference between the two phones is that Oneplus was ready to pay AT&T to check their software engineer's work.
Droidriven said:
That is like asking a car parts store for a starter for a Ford engine when you actually need a starter for a Nissan engine, they'll give you what you ask for but it doesn't mean the Ford starter will actually work on the Nissan engine.
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If you want a car analogy it would be more like... I purchased an after market starter which has the same bolt& spindle pattern, and electrical configuration BUT when I connected everything ford's on-board diagnostics refused to start using a non-ford component. In this scenario, I have already done the starter installation and software patch, and know that these two things are operating as they should. I am now reaching out to the modder's forum to see if anyone knows of any other checks the OBD does to verify the starter which I should take into account while designing my patch before I turn on my car.
Droidriven said:
Trying to trick them into enabling VoLTE probably won't work, if their system does not offer VoLTE support for your hardware itself, you will not be able to use VoLTE.
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See first response - the communications hardware is the same between my phone and other phones on their whitelist.
Droidriven said:
It basically boils down to this, control of whether VoLTE will work for you or not is completely in their hands, not yours, it is all done from their end, there isn't really anything you can do from your end.
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VoLTE is just like any other communications protocol, it requires both devices to be able to communicate, and is a matter of both software and hardware. The thing that is lacking in my case is software, not hardware. and as the guide which I linked previously shows the software can be altered.
Droidriven said:
Your phone actually identifies itself to the network based upon a combination of hardware and software information that the network detects or receives from the device remotely, their job on the other end is to set their network up to provide service to the identified device and to identify the device and the service as yours.
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This seems to be getting at what I'm actually asking. I'm trying to see what other items are involved in the "handshake" between my device and the network which might cause a flag. do you know what the "combination of hardware and software information" which the carrier's network uses to identify my phone would be, specifically?
healerdan said:
I think you are missing the part where I am using (in this example) programming and hardware from a pixel 4. this is only partly a hardware problem, but there's not as wide an array of different hardware types as you seem to think. a cursory search shows my device utilizes a snapdragon 855, and an X50 modem. The Oneplus 6T, which is permitted on AT&T's network utilizes the exact same hardware. The difference between the two phones is that Oneplus was ready to pay AT&T to check their software engineer's work.
If you want a car analogy it would be more like... I purchased an after market starter which has the same bolt& spindle pattern, and electrical configuration BUT when I connected everything ford's on-board diagnostics refused to start using a non-ford component. In this scenario, I have already done the starter installation and software patch, and know that these two things are operating as they should. I am now reaching out to the modder's forum to see if anyone knows of any other checks the OBD does to verify the starter which I should take into account while designing my patch before I turn on my car.
See first response - the communications hardware is the same between my phone and other phones on their whitelist.
VoLTE is just like any other communications protocol, it requires both devices to be able to communicate, and is a matter of both software and hardware. The thing that is lacking in my case is software, not hardware. and as the guide which I linked previously shows the software can be altered.
This seems to be getting at what I'm actually asking. I'm trying to see what other items are involved in the "handshake" between my device and the network which might cause a flag. do you know what the "combination of hardware and software information" which the carrier's network uses to identify my phone would be, specifically?
Click to expand...
Click to collapse
Actually, my car analogy was accurate, I don't think I explained why as well as I could have. The hardware/software differences that I'm referring to equate to the differing parts having the same purpose and same function but having differening bolt patterns the same as a Ford/Nissan starter sharing the same purpose and function but have differing bolt patterns.
Yes, another device might share the same hardware components and be approved but that doesn't necessarily mean that there is cross compatibility because the two devices have other differences that come into play.
When I say "if they support your hardware", I am not referring to ONLY the radio hardware, I mean the whole device being different hardware, which means differences in kernel also because kernel and hardware are very closely related which comes into play because these components also play a part in identifying the device remotely. Using a kernel from another device won't work either because the "other" hardware differences between the devices would cause the kernel from another device to brick your device.
You can modify software and you can emulate software but emulation at the hardware level isn't really feasible for android.
Some of the "handshakes" that identify your device come from things that if you modify them to make the network see your device as a different device, it may cause your device to lose functionality, other parts are illegal in certain places so they can't be discussed here.
It is such a rabbit hole that it is just all around more sensible to just use a device that is compatible without modifying. If you want to use VoLTE on AT&T, you'll have more success by playing their game because they hold the cards.
Why AT&T are shutting down all not AT&T phones on their Network | AT&T Community Forums
Why AT&T are shutting down all not AT&T phones on their Network?. Even if phones are working perfectly on AT&T network now and are 4G with VoLTE, Video Calling and WiFi calling capabil...
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I figured I'd ask here. I'm almost certain that it isn't possible at all to do but you never know what the great devs here at XDA has come up with.
I have a HTC HD7s from ATT. It's a GREAT phone in my opinion. Never had a single problem with it; but I did with AT&T. They were just; lacking in terms of anything in my local area.
Now for my question; It's probably not possible but like I said you never know until you ask. I am currently running on Sprint service with my Epic 4G Touch. Love the service as it does what I need it to do (a lot better then AT&T ever did). Now AT&T is GSM if I'm correct and I know sprint is CDMA.
But what could I change my HD7s over to via flashing/custom roms or whatnot. I doubt sprint would even think of being an option; but if there's a way to get it on even a pre-pay service; I'd love to have it sitting around as a backup phone if I ever needed it. So is it possible to flash over my HD7s to any other carriers? I have read that my current phone can actually be flashed to multiple other carriers, but with sprints (decent) service, there's no need.
Thanks ahead of time!
Your HD7S cannot work on a CDMA network (Sprint, Verizon) because it lacks the necessary radio hardware. No amount of flashing can fix that.
If it's unlocked, you can use it on any GSM network, however; no flashing would be required for that. The most obvious example of a non-AT&T GSM network in the USA is T-Mobile. Your phone will work on T-Mobile but won't get 3G due to lack of AWS UMTS support -- in other words, it doesn't have support for T-Mobile's 3G frequency.
If you can find a virtual network operator that uses AT&T's network, then you should be able to use your phone on that network and get 3G. I'm not up on which operators that might include.
The specific thing you need for your phone is a "SIM-unlock" which means removing the restriction that AT&T puts on their phones to prevent using SIM cards from other carriers. Typically, AT&T will remove this lock for you if you ask them, but otherwise there are sites online that can sell you unlock codes or you could try calling HTC.
3. Post only using a clear subject and message.
You're most likely to receive a helpful answer to your question if you use a short subject title that describes your problem and a message that explains in detail what your problem is and what you've tried to solve it.
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Please use search function, most of the questions are already answered. If you still need to post your doubts please do it in an existing thread. Is really no need to open a new thread with same topic. Dispersed information helps to nobody.
NumberSync is AT&T's feature that allows an LTE enabled watch to masquerade its telephone number as if it were the same as the associated phone's number. I just thought I'd pass this along to anyone trying to use this feature that I have just been blown off by AT&T, because I am using the US996. Anyone else experience this? Are there any workarounds?
Thanks.
Thank you for choosing AT&T for your wireless needs!
This email is in reference to a case that was filed on your wireless account on 02/24/2017, regarding the request to add Voice over LTE to line <redacted>.
We see that the line is currently using an unlocked device from another network. In order to utilize AT&T’s LTE network, the line must be using an AT&T LTE device. Since the current device being used is not compatible with our network, we cannot add the LTE feature as requested. I apologize for any inconvenience.
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My only guess for a logical reason is that they add something to the software to make it work. As a non-AT&T device, it doesn't have said software.
I was just hoping someone here had a different experience or might know a workaround. I suspect my IMEI number isn't on their "list", which makes it incompatible... I'm going to physically go into a store and see if I can a different answer -- or a more thorough one.
wtharp2 said:
I was just hoping someone here had a different experience or might know a workaround. I suspect my IMEI number isn't on their "list", which makes it incompatible... I'm going to physically go into a store and see if I can a different answer -- or a more thorough one.
Click to expand...
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I can't imagine the US996 doesn't support VoLT. But I can easily imagine AT&T being a pain about adding it to a device not in their system
If it were me I would try to enable VoLT on that line with a device that AT&T does recognize and then switch the sim to the US996.
Mike
Pardon my noobness, I will explain this to the best of my abilities
AT&T told me that my current phone Samsung S8+ will not work on their network (international dual sim unlocked version). They said that it is because "the 3G will shut off" but this phone is clearly a 4G phone. To be more specific, my device is a SM-G955FD. They sent me a replacement phone which is less than crappy and said my current sim will be deactivated soon.
I have already rooted (and ROM'ed) my phone - and I know you can change device identity/fingerprint using build props. I want to mask my phone as a SM-G955FU which is the USA unlocked version. At this point, I'd like to know if this could make a difference and make my phone not be deactivated by fooling their system, or if there are other things to try.
List of permitted phones
https://www.att.com/idpassets/images/support/wireless/Service-Capabilities-Unlocked-Devices-ATT-Network.pdf
Help appreciated,
I don't think they query device's brand / model property as stored in Android's build.prop file because these characteristics at any time can get changed by user.
The speed of data access relies on two things: your phone and your service provider. Every phone has a radio module that is responsible for talking to the network. It is this piece of hardware that either can or can not use latest communication technologies: if the phone does not support 4G, you will not get that speed whatever you try.
jwoegerbauer said:
I don't think they query device's brand / model property as stored in Android's build.prop file because these characteristics at any time can get changed by user.
The speed of data access relies on two things: your phone and your service provider. Every phone has a radio module that is responsible for talking to the network. It is this piece of hardware that either can or can not use latest communication technologies: if the phone does not support 4G, you will not get that speed whatever you try.
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Thanks, what is odd is that it should support it on several bands
Will Samsung Galaxy S8+ work in USA?
In this page we are going to show you the compatibility of Samsung Galaxy S8+ with the mobile networks of USA and with the telephony operators that provide service in USA.
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The same thing happened to me today, woke up to a sim not registered message and no cell service (voice, sms or data).
I went to the store and they said my unlocked Moto G7 Power (XT1955-2) is not supported/compatible on ATT's network. I re-checked the phone's specs and it supports 4G LTE on bands 12 and 17 on 1900 Mhz which overlaps the data I found for ATT's network. I'm not well versed in this stuff tho. Perhaps it's a local towers thing and I am in an area where their towers are operating on the other ATT frequencies (1700, 700)? The guy at the store did something (I forget the exact details) and I do have voice back, but that is it, no data or SMS. He also mentioned that ATT is like cracking down on what kind of devices can connect. If ATT is blocking my device tho I'm curious, how is it possible? I guess they can lookup my device via the IMEI and then see if it's on their approve list of devices?
I don't understand their problem. Your phone model is listed as supported as long as you update your software to enable WiFi calling (VoLTE). Come 2/2022, you phone must either be 5G or VoLTE calling enabled to be supported. My Xiaomi Mi Mix 2s shows that it can do VoLTE under the sim card details in Settings and supports 13 LTE bands, including AT&T's bands. It should continue to work on their network after 2/2022.
Yet AT&T repeatedly disabled my phone. I had to tell them to re-activate my phone multiple times. I have tried some new phones. Turned out everytime I pulled the sim out to try a new phone and stick it back in my old phone, AT&T would check the phone's IMEI again and would disable the phone. On the 5th call with them, they put in a code/note in their system to mark my IMEI (be ware each sim tray has its own IMEI) not to be disabled until Fed 2022. I have since tried Surface Duo which on this list and decided not to keep it. Stuck the sim card back in my old phone specific sim tray and it continues to work.
Call them to re-activate/keep your phone active until Fed 2022. They have no rights to disable your phone before then.
Most A&T reps understand less than us on the reason to disable our phone. They jsut keep saying 3G phones will be disabled but our phoens are clearly LTE. VoLTE is one real reason of the problem but them our phones support VoLTE anyway. I am tired of arguing with them and am looking at a Note 10 now. But your situation got me concerned. Sounds like they may not honor the supported list which is updated frequently. I downloaded the June version of the list which is largely the same as yours and asked them how long they would support the phones on the list. They couldn't/wouldn't commit. Even on the phones they sell at their website, they would only give a vague promise to support them for "quite a while".
AT&T has always advertized BYOP. We spent big money on nice phones that are compatible with their network. And now the want to shut us out.
I got a Metro by T-Mobile phone unlocked on eBay and while the phone no longer rejects MVNO sims, it won't connect to any network either. It still connects when I put the Metro sim back in but it won't connect with sims from Lyca, Tello or Hello Mobile, all T-Mobile MVNOs. The phone is a TCL 30 XE 5G (T767W) and I bought two of them new and they both have the same problem. I'm new to the T-Mobile network and I don't know if I'm missing something. I've never had this kind of trouble on Verizon or AT&T. Has anyone else run into a problem like this? I appreciate any help anyone can offer.
Thanks!
Look inside here:
How to Check If Android Phone is Unlocked or Locked
Before buying a new Android Phone, it is best to check if Android Phone is Unlocked or Locked. Here are 2 ways to check the Simlock status of your Android phone.
www.unlockboot.com
xXx yYy said:
Look inside here:
How to Check If Android Phone is Unlocked or Locked
Before buying a new Android Phone, it is best to check if Android Phone is Unlocked or Locked. Here are 2 ways to check the Simlock status of your Android phone.
www.unlockboot.com
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According to that site my phone is unlocked but it still won't connect to any network unless the original Metro sim is installed.
WhatsWrongWithThisPhone said:
According to that site my phone is unlocked but it still won't connect to any network unless the original Metro sim is installed.
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Maybe you need to enter service menu and change your radio settings or maybe you need to flash a different modem for your specific model number.
I know you said you bought them new but can you confirm that their IMEI is intact?
Droidriven said:
Maybe you need to enter service menu and change your radio settings or maybe you need to flash a different modem for your specific model number.
I know you said you bought them new but can you confirm that their IMEI is intact?
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Thank you for your reply! Both phones were shipped to me from Metro by T-Mobile. The phones were able to connect with an MVNO sim when I set the radio to 2G only mode but that option disappeared when the phones updated to Android 12 and now they can't connect at all. Even before the update, the phones would frequently disconnect and I had to set them back to 2G only mode to get service back so there was always something wrong. I'm pretty good with computers but I've never flashed a phone before and I've been suspecting that I would have to do that with these phones. I'll be happy to check their IMEI numbers if you could let me know what I'm looking for. I'd also like to learn more about flashing a new modem as you mentioned above that sounds like it might address the problem. And if you wouldn't mind letting me know where I could find the service menu?
Thanks in advance!!
WhatsWrongWithThisPhone said:
Thank you for your reply! Both phones were shipped to me from Metro by T-Mobile. The phones were able to connect with an MVNO sim when I set the radio to 2G only mode but that option disappeared when the phones updated to Android 12 and now they can't connect at all. Even before the update, the phones would frequently disconnect and I had to set them back to 2G only mode to get service back so there was always something wrong. I'm pretty good with computers but I've never flashed a phone before and I've been suspecting that I would have to do that with these phones. I'll be happy to check their IMEI numbers if you could let me know what I'm looking for. I'd also like to learn more about flashing a new modem as you mentioned above that sounds like it might address the problem. And if you wouldn't mind letting me know where I could find the service menu?
Thanks in advance!!
Click to expand...
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After they updated, have you tried booting into recovery and wiping the cache partition(not factory reset)? Sometimes, after updates, wiping cache is necessary to remove conflicts between previously existing data and the new update.
If you are getting a connection of any kind then your IMEI is fine.
Flashing a modem is sometimes necessary but it can have risks if you flash the wrong thing.
I'm not familiar with TCL devices or how they are flashed. Typically, to flash a different modem requires downloading a firmware that has the modem that you want/need then extracting the modem from the firmware then flash the extracted modem onto the device.
Methods to access service/radio menu different from device to device, I don't know how it is done on TCL devices. Most of the time it is done by using your dialer and dialing a specific code, if there is a dialer code for your device, you should be able to find it with a Google search for:
"TCL 30 XE 5G dialer menu code"
Or
"TCL 30 XE 5G service menu"
Droidriven said:
After they updated, have you tried booting into recovery and wiping the cache partition(not factory reset)? Sometimes, after updates, wiping cache is necessary to remove conflicts between previously existing data and the new update.
If you are getting a connection of any kind then your IMEI is fine.
Flashing a modem is sometimes necessary but it can have risks if you flash the wrong thing.
I'm not familiar with TCL devices or how they are flashed. Typically, to flash a different modem requires downloading a firmware that has the modem that you want/need then extracting the modem from the firmware then flash the extracted modem onto the device.
Methods to access service/radio menu different from device to device, I don't know how it is done on TCL devices. Most of the time it is done by using your dialer and dialing a specific code, if there is a dialer code for your device, you should be able to find it with a Google search for:
"TCL 30 XE 5G dialer menu code"
Or
"TCL 30 XE 5G service menu"
Click to expand...
Click to collapse
I was able to find my phone's service mode or engineering mode (hope they're the same thing) and get service back by setting the phone to 2G only mode again but that doesn't solve the problem of it losing service when LTE or 5G are turned on. Are there any other settings I could try changing?
WhatsWrongWithThisPhone said:
I was able to find my phone's service mode or engineering mode (hope they're the same thing) and get service back by setting the phone to 2G only mode again but that doesn't solve the problem of it losing service when LTE or 5G are turned on. Are there any other settings I could try changing?
Click to expand...
Click to collapse
Can you use the service menu to find out which bands/frequencies and network type the current modem/radio is using?
Can you find out which bands/frequencies and network type that your carrier network is using?
Compare them to see if they are compatible.
Or, try calling customer support for your carrier, there may be something they need to do in their system from their end to get your device to connect.
Droidriven said:
Can you use the service menu to find out which bands/frequencies and network type the current modem/radio is using?
Can you find out which bands/frequencies and network type that your carrier network is using?
Compare them to see if they are compatible.
Or, try calling customer support for your carrier, there may be something they need to do in their system from their end to get your device to connect.
Click to expand...
Click to collapse
What do you mean by network type?
There are a lot of options to choose from, several of them list bands. Is there a specific menu I should look for?
The carrier I have the phone on is Tello which is a T-Mobile MVNO. I've also tried Lyca and Hello Mobile both are also Tmo MVNOs and all three had the same problem. The phones are from Metro by T-Mobile so everything should be compatible. Tello customer service has tried to help but they can't figure it out.
WhatsWrongWithThisPhone said:
What do you mean by network type?
There are a lot of options to choose from, several of them list bands. Is there a specific menu I should look for?
The carrier I have the phone on is Tello which is a T-Mobile MVNO. I've also tried Lyca and Hello Mobile both are also Tmo MVNOs and all three had the same problem. The phones are from Metro by T-Mobile so everything should be compatible. Tello customer service has tried to help but they can't figure it out.
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Click to collapse
But, are the bands that are presently available on the device within the range of bands that your carrier uses? Do the network and the device use the same bands? If so, you shouldn't need to flash a different modem, if not, you may need a different modem.
Did you boot into recovery and wipe the cache partition to remove any potential conflicts caused by updating to android 12?
Are you certain that the SIM(s) you are trying to use is/are valid and active? If they have been previously deactivated, they won't work
Don't skip through my posts and only answer part of my questions. Let's cover the bases without skipping an answer to a question. Otherwise, it could lead to a wild goose chase that could have been avoided by answering everything I ask.
Droidriven said:
But, are the bands that are presently available on the device within the range of bands that your carrier uses? Do the network and the device use the same bands? If so, you shouldn't need to flash a different modem, if not, you may need a different modem.
Did you boot into recovery and wipe the cache partition to remove any potential conflicts caused by updating to android 12?
Are you certain that the SIM(s) you are trying to use is/are valid and active? If they have been previously deactivated, they won't work
Don't skip through my posts and only answer part of my questions. Let's cover the bases without skipping an answer to a question. Otherwise, it could lead to a wild goose chase that could have been avoided by answering everything I ask.
Click to expand...
Click to collapse
Sorry about the confusion. I did wipe the cache and in the past I've done a full factory reset from recovery mode it didn't help. And this problem already existed before the update to Android 12. It started the moment I changed sims. The phones only ever worked right with the original Metro sim and still do. That's why I wasn't sure if they were unlocked right but they don't reject other sims either.
The sims are active and have never been deactivated and now that I can force the phones back into 2G mode again, I can make and receive calls and use 2G data.
As for the bands I'm finding in the service menu, this is where it gets weird. They're all selected, there must be over a hundred bands turned on including bands I know this phone doesn't support.
I have confirmed the phone supports all the same bands that Tello uses. Tello uses the same bands as T-Mobile.
WhatsWrongWithThisPhone said:
Sorry about the confusion. I did wipe the cache and in the past I've done a full factory reset from recovery mode it didn't help. And this problem already existed before the update to Android 12. It started the moment I changed sims. The phones only ever worked right with the original Metro sim and still do. That's why I wasn't sure if they were unlocked right but they don't reject other sims either.
The sims are active and have never been deactivated and now that I can force the phones back into 2G mode again, I can make and receive calls and use 2G data.
As for the bands I'm finding in the service menu, this is where it gets weird. They're all selected, there must be over a hundred bands turned on including bands I know this phone doesn't support.
I have confirmed the phone supports all the same bands that Tello uses. Tello uses the same bands as T-Mobile.
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Click to collapse
Ok, thanks for confirming.
It is weird, everything seems to be in place. Have you made sure your APNs(Access Point Names) are set correctly for the network?
I can't be certain that you have all of your network and radio settings set correctly because I have no idea what settings you have, what the options are or if there are any tucked away somewhere that isn't obvious.
If everything is right on your end, it may be something on their end that they need to get right.
Droidriven said:
Ok, thanks for confirming.
It is weird, everything seems to be in place. Have you made sure your APNs(Access Point Names) are set correctly for the network?
I can't be certain that you have all of your network and radio settings set correctly because I have no idea what settings you have, what the options are or if there are any tucked away somewhere that isn't obvious.
If everything is right on your end, it may be something on their end that they need to get right.
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Click to collapse
Yeah, the APN was the first thing I checked and Tello confirmed it too.
I can send you screenshots of the service menus if that would help.
Tello is now saying the phone might not be "fully unlocked" I don't know what that means. Is there more than one way to lock a phone? Did T-Mobile come up with another way of locking their phones? A screen in the settings menu does warn the phone is still locked and it isn't yet eligible to be unlocked but it accepts the sim and connects to 2G at least. Could Tello be on to something here?
WhatsWrongWithThisPhone said:
Yeah, the APN was the first thing I checked and Tello confirmed it too.
I can send you screenshots of the service menus if that would help.
Tello is now saying the phone might not be "fully unlocked" I don't know what that means. Is there more than one way to lock a phone? Did T-Mobile come up with another way of locking their phones? A screen in the settings menu does warn the phone is still locked and it isn't yet eligible to be unlocked but it accepts the sim and connects to 2G at least. Could Tello be on to something here?
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Click to collapse
There are couple of different kinds of "unlocked"
There is SIM/carrier unlock and there is bootloader unlock. They two completely different things and have nothing to do with each other.
Have you tried going through the carrier unlock process yourself to confirm it has been done correctly?
Droidriven said:
Have you tried going through the carrier unlock process yourself to confirm it has been done correctly?
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Click to collapse
I don't know how to do that.
WhatsWrongWithThisPhone said:
I don't know how to do that.
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Click to collapse
Generally, there is a website that you go to to get an unlock code.
Google search:
"TCL 30 XE 5G (T767W) SIM unlock"
Droidriven said:
Generally, there is a website that you go to to get an unlock code.
Google search:
"TCL 30 XE 5G (T767W) SIM unlock"
Click to expand...
Click to collapse
My understanding is that Metro phones can't be unlocked with a code. Instead, they're unlocked by a preinstalled carrier app when the phone becomes eligible for an unlock, which my phone isn't. In my case, I bought an unlocking service from eBay which had me hook up my phone to my PC via USB for the unlock. Is there another way to check?
WhatsWrongWithThisPhone said:
My understanding is that Metro phones can't be unlocked with a code. Instead, they're unlocked by a preinstalled carrier app when the phone becomes eligible for an unlock, which my phone isn't. In my case, I bought an unlocking service from eBay which had me hook up my phone to my PC via USB for the unlock. Is there another way to check?
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Click to collapse
You got scammed, whether they did it on purpose or not is another question. They probably didn't rob you on purpose, it is just a matter of there never being any kind of guarantee that a 3rd party unlocking service works on every device. You took that chance when you chose to go that route.
If there is an app that is supposed to be used, why is your device not eligible to unlock via the app? You will have to use the official unlock method if/when it is eligible, hopefully the 3rd party unlock service hasn't done anything that conflicts with the official method.
I suggest that, in the future, don't make gambles or look for shortcuts when buying devices without being 100% certain that you are buying from a reputable source that guarantees their products and services. It is best to buy directly from the carrier/manufacturer or from Swappa. I wouldn't buy from eBay unless I could confirm that there was a legitimately proven unlock method for the specific model number that I'm considering purchasing before I actually purchase the device.
If you can return the device and get your money back, I suggest you do it or report it to eBay to see if they will protect your purchase since what you got is not what you agreed to purchase.
Droidriven said:
You got scammed, whether they did it on purpose or not is another question. They probably didn't rob you on purpose, it is just a matter of there never being any kind of guarantee that a 3rd party unlocking service works on every device. You took that chance when you chose to go that route.
If there is an app that is supposed to be used, why is your device not eligible to unlock via the app? You will have to use the official unlock method if/when it is eligible, hopefully the 3rd party unlock service hasn't done anything that conflicts with the official method.
I suggest that, in the future, don't make gambles or look for shortcuts when buying devices without being 100% certain that you are buying from a reputable source that guarantees their products and services. It is best to buy directly from the carrier/manufacturer or from Swappa. I wouldn't buy from eBay unless I could confirm that there was a legitimately proven unlock method for the specific model number that I'm considering purchasing before I actually purchase the device.
If you can return the device and get your money back, I suggest you do it or report it to eBay to see if they will protect your purchase since what you got is not what you agreed to purchase.
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Click to collapse
I got the phones new from Metro not eBay. The only thing I got from eBay was the unlocking service which cost me $8. And I didn't pay anything for the phones either as they were free with the purchase of one month of Metro service. So there's really no point in returning the phones and I'm not gonna bother opening a case with eBay over $8.
Metro won't unlock the phones until I've paid for six months of their service.
A quick search on eBay comes up with multiple sellers offering unlocks for my specific phone model locked to Metro. I've been thinking about just trying to get the phones unlocked again by another seller but everything and everyone seems to be telling me the phones are already unlocked so I don't know what I should try next. Is there a way to check if the phones are really unlocked?
WhatsWrongWithThisPhone said:
I got the phones new from Metro not eBay. The only thing I got from eBay was the unlocking service which cost me $8. And I didn't pay anything for the phones either as they were free with the purchase of one month of Metro service. So there's really no point in returning the phones and I'm not gonna bother opening a case with eBay over $8.
Metro won't unlock the phones until I've paid for six months of their service.
A quick search on eBay comes up with multiple sellers offering unlocks for my specific phone model locked to Metro. I've been thinking about just trying to get the phones unlocked again by another seller but everything and everyone seems to be telling me the phones are already unlocked so I don't know what I should try next. Is there a way to check if the phones are really unlocked?
Click to expand...
Click to collapse
You've already used methods to check if it is unlocked. Obviously, the service you paid for didn't work, you can't get your money back for that, those services don't come with any guarantee. As I said, you can take another chance and try another 3rd party service that also is not guaranteed or you can wait and do it the official way. I'm betting the unlock service is a waste of time and money and you'll have to wait and do it the right way. That is the cost of blindly taking a shortcut.
I used to exchange mobile phones with others. When I took it, I said that it could work normally and there was a signal. It only took a few days
aibie520 said:
I used to exchange mobile phones with others. When I took it, I said that it could work normally and there was a signal. It only took a few days
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Dude, if u wanna have detail supports/help to solve your issues, at least, make ur issue clear and as detail as possible. How u suppose others can help u out with only few words and no detail information like this dude?
LinhBT said:
Dude, if u wanna have detail supports/help to solve your issues, at least, make ur issue clear and as detail as possible. How u suppose others can help u out with only few words and no detail information like this dude?
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Click to collapse
Some words of the translator I use may not be very clear.Now my one plus8 yes T-MobileThe network lock has been unlocked. But the problem now is that there is no signal. No network. Only the operator's name.
aibie520 said:
Some words of the translator I use may not be very clear.Now my one plus8 yes T-MobileThe network lock has been unlocked. But the problem now is that there is no signal. No network. Only the operator's name.
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Click to collapse
I missed the part where you actually contacted the provider to have your IMEI or SIM reprovisioned.
rodken said:
I missed the part where you actually contacted the provider to have your IMEI or SIM reprovisioned.
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Click to collapse
Do you mean to let me contact the supplier to reset my IMEI and SIM?
My mobile phone was deceived, and I bought it with my good mobile phoneOne plus8I didn'tT-Mobile account, any purchase information.
aibie520 said:
Do you mean to let me contact the supplier to reset my IMEI and SIM?
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Click to collapse
Negative. Supplier and network provider are two different things.
-- Your case could be a service glitch or distorted configurations.
rodken said:
Negative. Supplier and network provider are two different things.
-- You case could be a service glitch or distorted configurations.
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Click to collapse
The service fault does not exist. Because I replaced several SIM cards without signal, and I replaced these SIM cards with other mobile phones, all of them can use the network normally. As for the loss of configuration, I don't know how to operate it. I have been using it for several days. There is a signal. Suddenly, there is no signal one day. I have a signal from HO2, update to color13, and suddenly there is no signal at color13。I can't get the network when I change the system back and forth in Ho2.color13.oos.
aibie520 said:
The service fault does not exist. Because I replaced several SIM cards without signal, and I replaced these SIM cards with other mobile phones, all of them can use the network normally. As for the loss of configuration, I don't know how to operate it. I have been using it for several days. There is a signal. Suddenly, there is no signal one day. I have a signal from HO2, update to color13, and suddenly there is no signal at color13。I can't get the network when I change the system back and forth in Ho2.color13.oos.
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Click to collapse
Unless you and I referring to apples and oranges. Your issue has nothing to do with which operating system you are using or have updated to.
-- Reprovisioning resets your connection to the server and sets everything that reps can modify back to default settings.
-- Most carriers place the blame on user meddling on their device causing misprovisioning(s).
Reprovisioning refreshes the data on the UICC/SIM and APN settings.
It can also mean them changing the QCI settings on the UE and UPF at the core layer (meaning changing / presumably increasing the allowed speed of your service).
In simple terms, provisioning is the process of preparing and equipping a network to allow it to a provide service to its users. SIM Card provisioning is a process to activate said SIM and services before it is used by a customer.
Reprovisioning of a SIM is nothing but repeating the process from scratch.
In the event that you feel that it could be something else besides the SIM and/or IMEI, feel free to enlighten me.
rodken said:
Unless you and I referring to apples and oranges. Your issue has nothing to do with which operating system you are using or have updated to.
-- Reprovisioning resets your connection to the server and sets everything that reps can modify back to default settings.
-- Most carriers place the blame on user meddling on their device causing misprovisioning(s).
Reprovisioning refreshes the data on the UICC/SIM and APN settings.
It can also mean them changing the QCI settings on the UE and UPF at the core layer (meaning changing / presumably increasing the allowed speed of your service).
In simple terms, provisioning is the process of preparing and equipping a network to allow it to a provide service to its users. SIM Card provisioning is a process to activate said SIM and services before it is used by a customer.
Reprovisioning of a SIM is nothing but repeating the process from scratch.
In the event that you feel that it could be something else besides the SIM and/or IMEI, feel free to enlighten me.
Click to expand...
Click to collapse
I'm wondering if he's trade-in a stolen device or not. Since due to TMO's policies ( As mentioned in other topic, I have KebabTMO ) the device will be network locked permanent. And as I did lots of research on this matter with 8T, the only solution is to ditch the modem and replace with another one, then force EDL flash Global fw to convert it to global.
Using tools ( even Qualcomm Tools or other pro tool specific made for OP devices or to work with deivce's modem are both useless in this case, I even used QXDM, QCAT, along with QPST )
rodken said:
Unless you and I referring to apples and oranges. Your issue has nothing to do with which operating system you are using or have updated to.
-- Reprovisioning resets your connection to the server and sets everything that reps can modify back to default settings.
-- Most carriers place the blame on user meddling on their device causing misprovisioning(s).
Reprovisioning refreshes the data on the UICC/SIM and APN settings.
It can also mean them changing the QCI settings on the UE and UPF at the core layer (meaning changing / presumably increasing the allowed speed of your service).
In simple terms, provisioning is the process of preparing and equipping a network to allow it to a provide service to its users. SIM Card provisioning is a process to activate said SIM and services before it is used by a customer.
Reprovisioning of a SIM is nothing but repeating the process from scratch.
In the event that you feel that it could be something else besides the SIM and/or IMEI, feel free to enlighten me.
Click to expand...
Click to collapse
oh my god! It's too profound. How should I solve it in the end? I don't understand this at all.
LinhBT said:
I'm wondering if he's trade-in a stolen device or not. Since due to TMO's policies ( As mentioned in other topic, I have KebabTMO ) the device will be network locked permanent. And as I did lots of research on this matter with 8T, the only solution is to ditch the modem and replace with another one, then force EDL flash Global fw to convert it to global.
Using tools ( even Qualcomm Tools or other pro tool specific made for OP devices or to work with deivce's modem are both useless in this case, I even used QXDM, QCAT, along with QPST )
Click to expand...
Click to collapse
How can I solve this problem? Replace the system?
aibie520 said:
oh my god! It's too profound. How should I solve it in the end? I don't understand this at all.
Click to expand...
Click to collapse
The general consensus it to perform a factory reset.
-- Take a deep breath, clear your mind and prepare to contact the network provider with explicit details.
-- You initially stated that you exchange phones with others.
-- You need to check to be certain that the ESN is cleared "for take-off".
A clear/clean ESN indicates that it is activated properly by the service provider. An unclear ESN refers to a phone that is either still activated, or lost/stolen.
ESNs might be “bad,” which means the carrier has blacklisted the phone at a moment's notice.
rodken said:
The general consensus it to perform a factory reset.
-- Take a deep breath, clear your mind and prepare to contact the network provider with explicit details.
-- You initially stated that you exchange phones with others.
-- You need to check to be certain that the ESN is cleared "for take-off".
A clear/clean ESN indicates that it is activated properly by the service provider. An unclear ESN refers to a phone that is either still activated, or lost/stolen.
ESNs might be “bad,” which means the carrier has blacklisted the phone at a moment's notice.
Click to expand...
Click to collapse
I can't contact the supplier, and I don't know what ESN is. I'm in China, I'm a Chinese user, and I don't have a T-Mobile account. It's just a mobile phone.
aibie520 said:
I can't contact the supplier, and I don't know what ESN is. I'm in China, I'm a Chinese user, and I don't have a T-Mobile account. It's just a mobile phone.
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Click to collapse
In this case you should have gotten a Chinese OnePlus 8. T - Mobile and other American carriers are picky with devices being used overseas, and there are often compatibility issues with doing so.
Often times your phone might not be able to connect to the cell towers in China because the cell bands may be different. This was the case for another Chinese user with the IN2019 (Verizon model) who couldn't connect at all. Your best bet would be to just get another phone or desperately try using the global or Chinese ROMs in the hopes of getting a connection.
Xryphon said:
In this case you should have gotten a Chinese OnePlus 8. T - Mobile and other American carriers are picky with devices being used overseas, and there are often compatibility issues with doing so.
Often times your phone might not be able to connect to the cell towers in China because the cell bands may be different. This was the case for another Chinese user with the IN2019 (Verizon model) who couldn't connect at all. Your best bet would be to just get another phone or desperately try using the global or Chinese ROMs in the hopes of getting a connection.
Click to expand...
Click to collapse
I am using Chinese color13.This is China ROM.The signal suddenly disappeared after several days of use