I was curious as a colleuge of mine recently purchased the OP8 5G from T-Mobile rather than directly from OnePlus. The sim tray only supports one SIM, and I am assuming that as it has been done historically on prior OP devices, the T-Mobile OP software only supports one sim card. I am unsure as to whether the T-Mobile variant has hardware to support two sims or not, but I think it may only a software issue. Would rooting and flashing to get onto the Global firmware enable dual-sim support for a OP8 5G T-Mobile variant?
Thank you,
I'd assume so. I'm planning on trying this myself when my dual sim slot comes in from Shenzhen.
tri_cchan said:
I'd assume so. I'm planning on trying this myself when my dual sim slot comes in from Shenzhen.
Click to expand...
Click to collapse
What is the dual sim's use case for you? International travel or work/personal use?
I think in Asian countries, people often get 1 cheap SIM for cheap voice plan and another SIM for cheap data plan.
iKevin said:
What is the dual sim's use case for you? International travel or work/personal use?
I think in Asian countries, people often get 1 cheap SIM for cheap voice plan and another SIM for cheap data plan.
Click to expand...
Click to collapse
In my colleague's case, for work and personal use. I personally have my OP7 Pro as my work phone, and it is the unlocked non-carrier variant, so the dual sim support is there. However, for my use, too, I would like to have the capability available on my T-Mobile OP8 5G just as my colleague. I had him order a dual-sim tray from eBay, and from a US seller to get the item faster. If it works for him, I'll likely order the dual sim tray.
i dont think the global or eu roms support dual sim. there was a disclaimer under the network & sim settings untill ob1. not sure if ob1 supports dual sim yet
Dual sim works, however, i cant get my Verizon sim to work with t-mobile. I get the CDMA-less notification, i read that you can get it to work, you just got to call verizon to register your imei with them so dual sim can work. This is running open beta, stable 10.5.12 wouldnt see my second sim.
I havent called them because my verizon sim is through work.
esjames said:
Dual sim works, however, i cant get my Verizon sim to work with t-mobile. I get the CDMA-less notification, i read that you can get it to work, you just got to call verizon to register your imei with them so dual sim can work. This is running open beta, stable 10.5.12 wouldnt see my second sim.
I havent called them because my verizon sim is through work.
Click to expand...
Click to collapse
And, this is on a T-Mobile OP8 5G? If so, I wonder if my colleague would have any issues running two T-Mobile SIMs on a global ROM? (I suspect the T-Mobile software doesn't even recognize a second SIM).
SimranSingh said:
And, this is on a T-Mobile OP8 5G? If so, I wonder if my colleague would have any issues running two T-Mobile SIMs on a global ROM? (I suspect the T-Mobile software doesn't even recognize a second SIM).
Click to expand...
Click to collapse
Yes, this is on my t-mobile OP8. I converted to global because I prefer global. I haven't tried two t mobile sim cards, and I haven't tried using t mobiles firmware.
esjames said:
Yes, this is on my t-mobile OP8. I converted to global because I prefer global. I haven't tried two t mobile sim cards, and I haven't tried using t mobiles firmware.
Click to expand...
Click to collapse
So, after receiving the dual sim tray, and inserting two SIM's on T-Mobile's software--it does not even recognize the second SIM. What particular guide did you use to port over to the global firmware? Thanks!
I would also be really interested in knowing how to get the second SIM to read on the T-Mobile IN2017 variant of this phone. I've been tearing my hair out trying to get this to work, now that I've seen that the international models running Android 11 OB2 seem to have functional dual SIM. Personally, I kind of gave up on getting Android 10 to do dual SIM- even with the European ROM (which I'm fairly certain is the only way dual SIM on this device was ever officially supported by OnePlus), I haven't gotten it, but I think I'm annoyingly close. T-Mobile MSM to Global 10.5.12 to Android 11 DP2 will get you non-functional dual SIM- the device will see both SIM cards, and will properly identify them and their phone numbers, but the second SIM won't connect to voice or data, no matter what I do. If I upgrade the device from DP2 to OB2, the dual SIM UI stays (if I go directly from Global to OB2, it doesn't show), but the second SIM slot is still non-functional- no service for voice or data on the second SIM.
For anyone who has gotten a T-Mobile OP8 to properly read two SIM cards, I'd really like to know how- through my hours of messing around with this thing, it always seems like one step forward and two steps back. Hopefully the final release of Android 11 clears this up.
(My two SIMs are from T-Mobile and AT&T, respectively. Unfortunately, I don't think two T-Mobile SIMs has a chance of ever working with this setup on any firmware- "SIM 1" and "SIM 2" share an IMEI. While that's probably okay for SIMs from different carriers, that's not going to fly on the same carrier- it will look like a cloned IMEI to the network, and probably get shut down fairly quickly.)
Has anyone managed to make it work the Oneplus 8 (pro) unlocked USA version with 2 sims at the same time ? Thank you
It's working on mine with second simbtray however there is no service with both inserted. BecUzebitvhas the same IMEI as slot 1
esjames said:
Yes, this is on my t-mobile OP8. I converted to global because I prefer global. I haven't tried two t mobile sim cards, and I haven't tried using t mobiles firmware.
Click to expand...
Click to collapse
I did the same thing to mine but I'm just seeing one imie active and usually it's 2
angelosabatini said:
Has anyone managed to make it work the Oneplus 8 (pro) unlocked USA version with 2 sims at the same time ? Thank you
Click to expand...
Click to collapse
I'd also like to know
Yes I have successfully convert my T-Mobile OnePlus 8 to global ROM and now I have dual sim compatibility.
haseebali55554 said:
Yes I have successfully convert my T-Mobile OnePlus 8 to global ROM and now I have dual sim compatibility.
Click to expand...
Click to collapse
Did you try using 2 sim cards ? Both working fine ? If yes, please share the guide with us. Thanks.
dedsecdz said:
Did you try using 2 sim cards ? Both working fine ? If yes, please share the guide with us. Thanks.
Click to expand...
Click to collapse
1. First of all unlock bootloader and u also have permanent sim unlock from t-mobile.
2.After unlocking your phone will restart, setup your oneplus 8 and enable developer mode and in developer mode enable "usb debugging" .
Note: You must have working adb/fastboot drivers.
3. now restart your phone to bootloader.
4. Download any android 10 fastboot Rom from xda developer.
"I have tested this : https://sourceforge.net/projects/fastbootroms/files/OnePlus 8/10.5.9-EUROPE-OnePlus8Oxygen_15.E.18_OTA_018_all_2007160043_913306-FASTBOOT.zip/download
4.1. For flashing this rom your phone has to be in fastboot mode.
5. After downloading extract the rom and open extracted folder and double click "flah_all.bat
5.1.connect your phone to computer in fastboot mode and enter "Y"
wait for 5 to 7 minutes, in this process your oneplus will restart to recovery mode but never unplug the cable or use your phone during installation.
Note: i have tested dual sim with dual sim tray.
haseebali55554 said:
1. First of all unlock bootloader and u also have permanent sim unlock from t-mobile.
2.After unlocking your phone will restart, setup your oneplus 8 and enable developer mode and in developer mode enable "usb debugging" .
Note: You must have working adb/fastboot drivers.
3. now restart your phone to bootloader.
4. Download any android 10 fastboot Rom from xda developer.
"I have tested this : https://sourceforge.net/projects/fastbootroms/files/OnePlus 8/10.5.9-EUROPE-OnePlus8Oxygen_15.E.18_OTA_018_all_2007160043_913306-FASTBOOT.zip/download
4.1. For flashing this rom your phone has to be in fastboot mode.
5. After downloading extract the rom and open extracted folder and double click "flah_all.bat
5.1.connect your phone to computer in fastboot mode and enter "Y"
wait for 5 to 7 minutes, in this process your oneplus will restart to recovery mode but never unplug the cable or use your phone during installation.
Note: i have tested dual sim with dual sim tray.
Click to expand...
Click to collapse
we dont need to root ?
we dont need to back up modem and persist as well?
aviator.OO7 said:
we dont need to root ?
we dont need to back up modem and persist as well?
Click to expand...
Click to collapse
I haven't face any fingerprint or network signals problem after converting.
haseebali55554 said:
I haven't face any fingerprint or network signals problem after converting.
Click to expand...
Click to collapse
do i need to root to begin with ?
Related
Firstly let me apologize for duplicating the content of several other topics. This post will intend to summarize the issue in order to provide better visibility to anyone trying to help.
To start off, I have the same problem with my Mate 8.
The Issue
The Huawei Mate 8 has two Sim Card Slots: one supports 3g/4g and the other supports only 2g. That's how it's build.
When you pun in non-China Telecom card into *either* of the slots a message pops up saying that 3g/4g is only supported on China Telecom: https://tj6nvw-bn1306.files.1drv.com/y3p0MIG3qgLckpGbYHxgH70oReY058UmP2hfiLYG-HZPelszWa8XkA5gqwtKldaPY54l0lK91_XhjKz149GjRW6H06HJyAdEN7dXS8GzEWZyDvEiUeg7moZtmEGVG3nFj-qqywRCQTzYESnpN5IGyuD7w/Screenshot_2016-01-26-14-08-52%20%281%29.png?psid=1
More Details
It is possible to change the active 3g/4g card slot via settings configuration.
You can use 2g capabilities in *any* of the physical slots (via configuration above)
When you insert 2 sim cards only one of them is active. The device does *not* recognize the second card. It is possible to switch between the two cards, but only one of them can be active.
The problem is reported only for CL00 & TL00 models (and not the AL10 or L29 ones).
What is tried already?
I've tried and confirm all the items above.
Did factory reset.
I've loaded the International Software to Mate 8 from this topics
The Chinese Telecom message no longer appears on the International Software, however the slot still doesn't work.
Did factory reset on the international Software as well.
Tried to unlock it via DC-Unlocker - it is not possible. The "Unlock" button is grayed out.
The Sim Status in DC-Unlocker is "unlocked" however it shows only one IMEI number, where the phone has 2 IMEI numbers if you check it via *#06#
Guys report the same problem with Verizon cards, where Verizon and China Telecom networks are similar.
Thoughts/Suggestions
I talked to the DC Unlocker guys from the support and they advised me it might be from the Firmware. Even I've installed the international one and don't rule out that this might be the root issue of the issue as I don't know the origins of the International software.
Any suggestions?
Update 1: I got feedback from DC Unlocker Support that the phone is most likely "unlocked". Still I'm not convinced that both sim slots are unlocked.
Update 2: Another suggestion from DC Unlocker Support: If device support frequencies (EU) and if they are different from China (they might be) then, yes it should be possible to solve this with correct firmware if such exists. You should check first original specifications of device for china networks, then compare them to network that you want to use it with.
Update 3: Clarification that problem exists only for CL00 & TL00 models (and not the AL10 or L29) (thanks @jbmc83)
u have to add that this is only pertaining to the china telecom locked models CL00 & TL00, and not the AL10 or L29 models
I have AL10 and verizon sim wont work.
Sent from my HUAWEI NXT-AL10 using Tapatalk
is it only verizon or also other carriers?
edit: ah thats a different reason though. both al10 and l29 mate 8 versions are gsm and not cdma based. thats different from the cl00 and tl00 variants being carrier locked to specific network providers...
im betting ur al10 will work just fine with tmobile or att
Sent from my Huawei Mate 8 NXT-AL10 using Tapatalk
Flikera said:
Firstly let me apologize for duplicating the content of several other topics. This post will intend to summarize the issue in order to provide better visibility to anyone trying to help.
To start off, I have the same problem with my Mate 8.
The Issue
The Huawei Mate 8 has two Sim Card Slots: one supports 3g/4g and the other supports only 2g. That's how it's build.
When you pun in non-China Telecom card into *either* of the slots a message pops up saying that 3g/4g is only supported on China Telecom: https://tj6nvw-bn1306.files.1drv.com/y3p0MIG3qgLckpGbYHxgH70oReY058UmP2hfiLYG-HZPelszWa8XkA5gqwtKldaPY54l0lK91_XhjKz149GjRW6H06HJyAdEN7dXS8GzEWZyDvEiUeg7moZtmEGVG3nFj-qqywRCQTzYESnpN5IGyuD7w/Screenshot_2016-01-26-14-08-52%20%281%29.png?psid=1
More Details
It is possible to change the active 3g/4g card slot via settings configuration.
You can use 2g capabilities in *any* of the physical slots (via configuration above)
When you insert 2 sim cards only one of them is active. The device does *not* recognize the second card. It is possible to switch between the two cards, but only one of them can be active.
The problem is reported only for CL00 & TL00 models (and not the AL10 or L29 ones).
What is tried already?
I've tried and confirm all the items above.
Did factory reset.
I've loaded the International Software to Mate 8 from this topics
The Chinese Telecom message no longer appears on the International Software, however the slot still doesn't work.
Did factory reset on the international Software as well.
Tried to unlock it via DC-Unlocker - it is not possible. The "Unlock" button is grayed out.
The Sim Status in DC-Unlocker is "unlocked" however it shows only one IMEI number, where the phone has 2 IMEI numbers if you check it via *#06#
Guys report the same problem with Verizon cards, where Verizon and China Telecom networks are similar.
Thoughts/Suggestions
I talked to the DC Unlocker guys from the support and they advised me it might be from the Firmware. Even I've installed the international one and don't rule out that this might be the root issue of the issue as I don't know the origins of the International software.
Any suggestions?
Update 1: I got feedback from DC Unlocker Support that the phone is most likely "unlocked". Still I'm not convinced that both sim slots are unlocked.
Update 2: Another suggestion from DC Unlocker Support: If device support frequencies (EU) and if they are different from China (they might be) then, yes it should be possible to solve this with correct firmware if such exists. You should check first original specifications of device for china networks, then compare them to network that you want to use it with.
Update 3: Clarification that problem exists only for CL00 & TL00 models (and not the AL10 or L29) (thanks @jbmc83)
Click to expand...
Click to collapse
I can confirm it doesn't have this issue with the NXT-DL00 model on ATT it reads my sim just fine
wricu01 said:
I can confirm it doesn't have this issue with the NXT-DL00 model on ATT it reads my sim just fine
Click to expand...
Click to collapse
I have the DL00 version as well and I was wondering have you tried to load the international ROM or anything else on it. Does it work the same as the AL10
Who can lay oeminfo file from
dev / block / platform / hi_mci.0 / by-name /
of firmware for L29
jjerickson19 said:
I have the DL00 version as well and I was wondering have you tried to load the international ROM or anything else on it. Does it work the same as the AL10
Click to expand...
Click to collapse
Yes, I am currently with the international rom from the link in the original post. Still doesn't work.
off-line said:
Who can lay oeminfo file from
dev / block / platform / hi_mci.0 / by-name /
of firmware for L29
Click to expand...
Click to collapse
For CL00 user, it seems to me that the international(eu) "oeminfo" file is the key for flashing L29 firmware, described as this topic.
Does anyone put "oeminfo" file of L29 anywhere??
Even putting different roms on this phone doesn't change the fact the main aim is locked in CDMA / LTE mode. It's a hardware thing or something these different roms can't edit.
same problem
1st slot 4g 3g 2g snd slot 3g/2g on each mate 8 any version
Hi. It is the first time I'm asking a question on this forum and I'm definitely not a cellphone expert.
I purchased a mate 9 from china MHA AL00 version B136.
The phone is working great, using Google play with GSM core.
However, I just inserted a nano sim card from Rogers (in Canada) but the phone is not able to detect it.
Any reason why I have this problem?
Thank you very much
Try different sim card ,also make sure to reboot after inserting the new sim card.
semsem1969 said:
Try different sim card ,also make sure to reboot after inserting the new sim card.
Click to expand...
Click to collapse
I will try this for sure, I was just wondering if the bands available in Canada were compatible with the phone
Maxlesuisse said:
I will try this for sure, I was just wondering if the bands available in Canada were compatible with the phone
Click to expand...
Click to collapse
Just Google the Mate 9 LTE bands, so you don`t have to guess ....
Has anyone been able to get dual SIM working on their T-Mobile OP8 after flashing to the Global ROM?
I have a dual SIM tray and whenever I insert two SIMs, I get service on the first, and the second is recognized, but refuses to connect to any network. This applies to any second SIM inserted. The IMEI numbers are showing as the same for IMEI1 and IMEI2, but that shouldn't be an issue as far as I can tell.
Thanks!
I have same issue did you find any fix? Please let me know
themoveforward said:
Has anyone been able to get dual SIM working on their T-Mobile OP8 after flashing to the Global ROM?
I have a dual SIM tray and whenever I insert two SIMs, I get service on the first, and the second is recognized, but refuses to connect to any network. This applies to any second SIM inserted. The IMEI numbers are showing as the same for IMEI1 and IMEI2, but that shouldn't be an issue as far as I can tell.
Thanks!
Click to expand...
Click to collapse
I have same issue did you find any fix? Please let me know
i have the same issue
Follow these instructions at your own risk. I am NOT responsible for you bricking your device. If you are new to this I advise you to do it with someone who is experienced and knows what he/she is doing.
I was recently able to "rebrand" my OnePlus 8 T-Mobile 5G phone from the T-Mobile version to the European version using these steps (I tried with the GLOBAL version but it DID NOT work):
1. Unlock the bootloader. Steps given in:
https://www.oneplus.com/support/answer/detail/op588
2. I was able to to use the MSMTool_instantnoodle_tmo_15_O.06_200411.zip to go back to 10.5.7.IN55CB
(OnePlus T-Mobile Android build) using the method given in (GLOBAL version FAILED for me here) :
Instructions: https://forum.xda-developers.com/oneplus-8/how-to/op8-unbrick-tool-to-restore-device-to-t4093043
Tool: https://androidfilehost.com/?fid=4349826312261823571
3 Repeat Step 1. Go to Step 4.
4. Next, I upgraded to 10.5.9.IN21BA (OnePlus European Android build) by flashing 10.5.9-EUROPE-OnePlus8Oxygen_15.E.18_OTA_018_all_2007160043_913306-FASTBOOT.zip using the method given in:
Instructions: https://forum.xda-developers.com/t/rom-stock-fastboot-op8-stock-fastboot-roms-for-oneplus-8.4084629/
Tool: https://sourceforge.net/projects/fastbootroms/files/OnePlus 8/
5 Repeat Step 1. Go to Step 6.
6. Finally, I upgraded the phone to the latest OnePlus Android version for this phone through System Update to 11.0.9.9.IN21BA (OnePlus European Android build). Now Dual Sim capability is installed but it does NOT show.
7. Relock the bootloader and NOW dual sim capability shows under SIM & Network.
What I don't understand is that the model, IN2017 (T-Mobile), remains the same but when you boot the phone, the T-Mobile logo does NOT show and it boots like a non-T-Mobile OnePlus phone. I expected the model to change to the European model number (IN2013). My goal was to get Dual-Sim working as it has been banned by carriers here in the good ol' USA. My phone now shows 2 sim cards, originally it only showed 1. Now I have to verify what signals it really works with (5G, 4G ?) and if the dual sim capability works.
Cmdr_Colstel said:
Follow these instructions at your own risk. I am NOT responsible for you bricking your device. If you are new to this I advise you to do it with someone who is experienced and knows what he/she is doing.
I was recently able to "rebrand" my OnePlus 8 T-Mobile 5G phone from the T-Mobile version to the European version using these steps (I tried with the GLOBAL version but it DID NOT work):
1. Unlock the bootloader. Steps given in:
https://www.oneplus.com/support/answer/detail/op588
2. I was able to to use the MSMTool_instantnoodle_tmo_15_O.06_200411.zip to go back to 10.5.7.IN55CB
(OnePlus T-Mobile Android build) using the method given in (GLOBAL version FAILED for me here) :
Instructions: https://forum.xda-developers.com/oneplus-8/how-to/op8-unbrick-tool-to-restore-device-to-t4093043
Tool: https://androidfilehost.com/?fid=4349826312261823571
2 Repeat Step 1. Go to Step 3.
3. Next, I upgraded to 10.5.9.IN21BA (OnePlus European Android build) by flashing 10.5.9-EUROPE-OnePlus8Oxygen_15.E.18_OTA_018_all_2007160043_913306-FASTBOOT.zip using the method given in:
Instructions: https://forum.xda-developers.com/t/rom-stock-fastboot-op8-stock-fastboot-roms-for-oneplus-8.4084629/
Tool: https://sourceforge.net/projects/fastbootroms/files/OnePlus 8/
4 Repeat Step 1. Go to Step 5.
5. Finally, I upgraded the phone to the latest OnePlus Android version for this phone through System Update to 11.0.9.9.IN21BA (OnePlus European Android build). Now Dual Sim capability is installed but it does NOT show.
6. Relock the bootloader and NOW dual sim capability shows under SIM & Network.
What I don't understand is that the model, IN2017 (T-Mobile), remains the same but when you boot the phone, the T-Mobile logo does NOT show and it boots like a non-T-Mobile OnePlus phone. I expected the model to change to the European model number (IN2013). My goal was to get Dual-Sim working as it has been banned by carriers here in the good ol' USA. My phone now shows 2 sim cards, originally it only showed 1. Now I have to verify what signals it really works with (5G, 4G ?) and if the dual sim capability works.
Click to expand...
Click to collapse
even if the two simcards appear, they won't work for you. the second simcard always says "no service"
acostmisa said:
even if the two simcards appear, they won't work for you. the second simcard always says "no service"
Click to expand...
Click to collapse
I went to Verizon yesterday with the setup written above and the second sim did register as Verizon with the first card in slot 1 as T-Mobile. The problem was that we only tested it with 5G. 5G did NOT work with both sim cards placed. I should have put my phone in 4G to see if THAT works. I will go to another Verizon store later in the week to see if it will work in 4G with both sim cards. Hopefully it will.
I went to the Verizon store yesterday and they said that I needed to open an account and activate my phone with that account in order for the Verizon service to work. I was under the impression that all you needed was a Sim card with an active Verizon account and a phone with a good IMEI. I asked them to use a spare Verizon card at the store to test it just to make sure it would work. He wanted me to sign up first which I wasn't going to do. I will have to find another store. Am I correct in assuming that you can just use the sim card from another phone and the service should automatically work ? Or do I have to "register" that phone with Verizon ? F%^k Verizon. Thank you.
So I went to the Verizon store yesterday and brought my OnePlus 8 (IN2017 updated with Oxygen OS 11.0.9.9IN21BA European version). I brought it in unlocked and the Verizon clerk told me it was "dangerous" to leave it unlocked and advised me to lock it (of course I did not). I had my phone set to LTE (4G) under network settings and the two SIMs slots were showing with the first one occupied by T-Mobile. The clerk placed a Verizon SIM card on the 2nd slot and the phone recognized it but IT DID NOT work (messages nor calls). So apparently, according to other users over the web, the blockage of service is coming from the carriers (T-Mobile, Verizon, etc.) themselves. They frown upon dual sim capability and until there are enough complaints to make them change their stance they will continue to refuse to provide dual sim service. It may work in Europe and Asia, but here in the US, not a chance. Talk about UNFREE market.
I checked my IMEI on Visible's website and it checked out. I am running the Android 11 Pixel Experience ROM and Google Fi SIM worked fine, but I cannot get the Visible SIM to even be recognized as existing in the tray. I tried both SIM slots. Does this have something to do with being rooted? Ironically I installed this SIM in my Poco F3 which is NOT compatible, and although I got no service, that phone did recognize the SIM and even all of the Verizon APNs. Just wondering if you guys have any thoughts? Thanks.
tuffluck said:
I checked my IMEI on Visible's website and it checked out. I am running the Android 11 Pixel Experience ROM and Google Fi SIM worked fine, but I cannot get the Visible SIM to even be recognized as existing in the tray. I tried both SIM slots. Does this have something to do with being rooted? Ironically I installed this SIM in my Poco F3 which is NOT compatible, and although I got no service, that phone did recognize the SIM and even all of the Verizon APNs. Just wondering if you guys have any thoughts? Thanks.
Click to expand...
Click to collapse
It shouldnt have anything to do with being rooted, but if you have converted/changed firmware then that could be the issue.
If you have the engineering mode app installed u can check the sim in *#808# or by adb shell am start com.oneplus.factorymode/.manualtest.SimCardTest . If the test fails then the modem or your efs is messed up.Hopfully you have a efs back up. Try starting over with MSM flash first.I believe the fail sim is caused buy a key that is in the locked sfs folder of the efs. I do know for a fact there is a RSUprivate key there also. And have obtained it. But still have not found a way to write this back, other then efs restore in twrp.
I'm guessing it is related to the ROM.
tuffluck said:
I checked my IMEI on Visible's website and it checked out. I am running the Android 11 Pixel Experience ROM and Google Fi SIM worked fine, but I cannot get the Visible SIM to even be recognized as existing in the tray. I tried both SIM slots. Does this have something to do with being rooted? Ironically I installed this SIM in my Poco F3 which is NOT compatible, and although I got no service, that phone did recognize the SIM and even all of the Verizon APNs. Just wondering if you guys have any thoughts? Thanks.
Click to expand...
Click to collapse
I'm on visible and I'm using an unlocked T-Mobile gm1915. When on the global rom, it gave me a pop up to instructions for using the verizon sim on a cdma-less device. However, I didn't have to do anything and the sim started randomly working after waiting 5-10 minutes. So, i recommend just leaving the sim in for atleast 10 min and have mobile data on.
how can fix when me flashing other rom，my sim card don't work, I'm tride unlock bootload , flash fastboot ROM(global),and found Europe style maybe can fix my question,to flash Europe OOS,my sim card always don't work,and my flash hydrogen os (china mobile sim card), it always didn't work,my phone is Verizon model IN 2019, I THINK it's fastboot ROM modem.img file have bugs or don't include my sim, I change it, always don't work, please help me
The sim card can be recognized but cannot be used
What SIM do you have? Do you use T - Mobile, etc. or do you use Verizon?
I can always give you your modem. img if you require it.
Xryphon said:
你有什么 SIM 卡？您使用 T - Mobile 等还是使用 Verizon？
Click to expand...
Click to collapse
China Mobile Sim card，phone is Verizon
I don't believe it was a good choice to buy a Verizon model OnePlus 8 in a region where Verizon cannot be used at all. China Mobile SIM cards can likely not be used in the United States and are likely not compatible with U. S. devices at all; hence the reason to buy a different SIM card when travelling to a different region. do you know if your device is unlocked?
Xryphon said:
我认为在根本无法使用 Verizon 的地区购买 Verizon 型号 OnePlus 8 不是一个好选择。中国移动 SIM 卡可能无法在美国使用，并且可能与美国设备完全不兼容；因此，在前往不同地区时购买不同 SIM 卡的原因。您知道您的设备是否已解锁吗？
Click to expand...
Click to collapse
I'm in China，when i use Verizon oxygen os my sim card have signal，just me flashing other rom my phone signal don't work，The sim card can be recognized but can't connected and use
It's possible that custom ROMs somehow don't support China Mobile; does it say anything when you enter the Mobile Data settings?
Xryphon said:
It's possible that custom ROMs somehow don't support China Mobile; does it say anything when you enter the Mobile Data settings?
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I think it,so I changed modem.img file,always no work
clisays said:
我想是的，所以我改变了modem.img文件，总是没有工作
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I catch my untrack msmdownloadtool zip ops file,get modem.img. ,use adb tool flash it, it can't be worked
Have you tried flashing the file in fastbootd?
Xryphon said:
您是否尝试过在 fastbootd 中刷新文件？
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试过了
Xryphon said:
Have you tried flashing the file in fastbootd?
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tride