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[Q] No Service after unlock

I successfully unlocked my Samsung Galaxy S 4G. However when I insert an AT&T sim, I show full bars of signal but the screen says (No Service). I've tried two different sim cards and neither will work. They are both older sim cards but they should still work, right?
Only thing that stands out as odd is the AT&T APN isn't checked blue; it's white (unmarked?) and can't be selected. I'm using Gingerbread 2.3 and my T-Mobile card works fine. I have my network bands set to automatic.
And for the record, in order to connect to AT&T's network, I need to use the AT&T sim all the time, right? I won't be able to connect to AT&T when using the T-Mobile sim, yes?

Tmobile cam connect to AT&T only when data roaming for me if I got to arkansas... Im.at&t. But imma say to try to unlock again
Sent from my SGH-T959V using XDA App

mcbipolar said:
I successfully unlocked my Samsung Galaxy S 4G. However when I insert an AT&T sim, I show full bars of signal but the screen says (No Service). I've tried two different sim cards and neither will work. They are both older sim cards but they should still work, right?
Only thing that stands out as odd is the AT&T APN isn't checked blue; it's white (unmarked?) and can't be selected. I'm using Gingerbread 2.3 and my T-Mobile card works fine. I have my network bands set to automatic.
And for the record, in order to connect to AT&T's network, I need to use the AT&T sim all the time, right? I won't be able to connect to AT&T when using the T-Mobile sim, yes?
Click to expand...
Click to collapse
When you switch Sim cards you have to do a factory data reset. Just enter recovery and select the option to factory reset then reboot it should recognize your new Sim.
Sent from my SGH-T959V using XDA Premium App

I did a factory data reset from Settings->Privacy->Factory Data Reset and it didn't work. Still says No Service.
And I don't think I need to unlock again because when I access that one screen (I forget the code to enter) it shows all the locks as set to OFF.
Any other ideas why the AT&T SIM card won't allow my phone to connect? Is the fact that it's an old card the problem?

mcbipolar said:
I did a factory data reset from Settings->Privacy->Factory Data Reset and it didn't work. Still says No Service.
And I don't think I need to unlock again because when I access that one screen (I forget the code to enter) it shows all the locks as set to OFF.
Any other ideas why the AT&T SIM card won't allow my phone to connect? Is the fact that it's an old card the problem?
Click to expand...
Click to collapse
It could be the sim card although I really dont see how it could be. Is it a 3g sim card? If so it should still work, factory reset, input the at&t apn settings, reboot phone. That is what I would try, I have an unlocked phone as well, and once you input the unlock code, its UNLOCKED.

type in *#06# and let me know what comes up

jdubb1106 said:
type in *#06# and let me know what comes up
Click to expand...
Click to collapse
Didn't think of that, depends how it was unlocked. IMEI could be issue

mcbipolar said:
I successfully unlocked my Samsung Galaxy S 4G. However when I insert an AT&T sim, I show full bars of signal but the screen says (No Service). I've tried two different sim cards and neither will work. They are both older sim cards but they should still work, right?
Only thing that stands out as odd is the AT&T APN isn't checked blue; it's white (unmarked?) and can't be selected. I'm using Gingerbread 2.3 and my T-Mobile card works fine. I have my network bands set to automatic.
And for the record, in order to connect to AT&T's network, I need to use the AT&T sim all the time, right? I won't be able to connect to AT&T when using the T-Mobile sim, yes?
Click to expand...
Click to collapse
you would need to use your att sim card you may have a issue with the fact the sgs4g actually lacks 3g band
its hsdpa or edge or G
unless att uses the same spectrum as tmobile for hsdpa you prob will not get a signal

Thanks for the help everyone. In my newbishness, I didn't understand from the instructions on unlocking that the foreign SIM needed to be active. None of the instructions say it needs to be. That turned out to be the problem: I was using an old, inactive SIM (hence no service).
Sick as I am with T-Mobile, I just took my phone in to AT&T and switched providers yesterday.

Able to use 3G only without physical SIM card? Network debug menu?

Is there a way to use the phone without a SIM card? I don't have LTE in my area, and I keep getting the "no SIM Error" so was thinking that the SIM was useless anyways.
On the stock ROM every time I get the SIM error, or if I remove the SIM card itself, I get no data on the phone at all. When I try to turn on Mobile Data it prompts me to insert the SIM.
On other CUSTOM or JB ROMs, I don't get the SIM error prompt but I simply get no data.
On older Sprint phones, I know you can go into the DEBUG menu to see that EVDO/3G was actually being authenticated, the handshake was negotiated, then connection type/speed/tower/hand-off status, etc. Is there such an option with Verizon phones? I'm wondering if Data is completely shut off without the SIM, or if the data connection is actually established on the network but simply blocked from being used?
PS - per recommendation I have tried using the PHONE INFO app to switch the option to NV only, but am still getting no data. Voice/Text work perfectly.

black7 said:
Is there a way to use the phone without a SIM card? I don't have LTE in my area, and I keep getting the "no SIM Error" so was thinking that the SIM was useless anyways.
On the stock ROM every time I get the SIM error, or if I remove the SIM card itself, I get no data on the phone at all. When I try to turn on Mobile Data it prompts me to insert the SIM.
On other CUSTOM or JB ROMs, I don't get the SIM error prompt but I simply get no data.
On older Sprint phones, I know you can go into the DEBUG menu to see that EVDO/3G was actually being authenticated, the handshake was negotiated, then connection type/speed/tower/hand-off status, etc. Is there such an option with Verizon phones? I'm wondering if Data is completely shut off without the SIM, or if the data connection is actually established on the network but simply blocked from being used?
PS - per recommendation I have tried using the PHONE INFO app to switch the option to NV only, but am still getting no data. Voice/Text work perfectly.
Click to expand...
Click to collapse
ASFAIK, the SIM does 3g and 4g. WHY? because 3g on the gs3 is ehrdp and that also requires a handshake between 3g and lte. I believe it is like using 3g tech but with the pipeline size of lte... or thats as far as I've read into it.

xicewallx said:
ASFAIK, the SIM does 3g and 4g. WHY? because 3g on the gs3 is ehrdp and that also requires a handshake between 3g and lte. I believe it is like using 3g tech but with the pipeline size of lte... or thats as far as I've read into it.
Click to expand...
Click to collapse
Thanks for the info, xicewallx. I was afraid of that, however I've read of people flashing both Sprint and Verizon variants of the SGS3 to Boost, Straight Talk (CDMA), Verizon Pre-Paid which all I assume do not use LTE/SIM. I presume this means that the SGS3 can certainly use 3G without the need of the SIM card. I'm looking for a way to default to this on the SGS3 for us poor folk who do not have the luxury of LTE yet and have to deal with the SIM error until Verizon/Samsung fixes it.
Any help would be greatly appreciated!

I was able to get to a debug screen using the IOTHiddenMenu option (through Any Cut) but it simply stated that EVDO was in "sleep state." I wasn't able to figure out how to get it to start a connection yet.

Go to the Verizon store and get a free SIM card? Why go through all of this trouble.
Sent from my Nexus 7

TheBiles said:
Go to the Verizon store and get a free SIM card? Why go through all of this trouble.
Sent from my Nexus 7
Click to expand...
Click to collapse
Thanks for the suggestion. Issue is that the phone is having the NO SIM error randomly. Have already tried a different SIM from Verizon (friend's account) but still have that same issue.

black7 said:
Thanks for the suggestion. Issue is that the phone is having the NO SIM error randomly. Have already tried a different SIM from Verizon (friend's account) but still have that same issue.
Click to expand...
Click to collapse
So get a new phone? That one is obviously faulty. Go get a free replacement. You have to live with it for 2 years. I wouldn't want a faulty device for a week let alone 2 years.
Sent from my SCH-I535 using Tapatalk 2

Are you in a poor signal area? Only time I've received the "No Sim" error was at my parents where the signal is crap. As for using it without the sim card, doubt that's possible since the sim is used for authentication if I'm not mistaken.

hello,
if i understand correctly, the sim card in the S3 is basically the same as all the previous world phones, meaning its just RUIM card. The MEID and IMEI are on the phone, the card it comes with is just basically a storage device in simple terms. can someone who has access to another verizon active S3 sim try putting the card into their phone and checking the IMEI that the phone reports? does swapping the cards change the IMEI in other words. I do not think it will, but interested to know for sure.
i just started playing with one of these, but i feel realy confident you can get non 4G services to work without a sim in it.
cheers,
disco

disco_y2k said:
hello,
if i understand correctly, the sim card in the S3 is basically the same as all the previous world phones, meaning its just RUIM card. The MEID and IMEI are on the phone, the card it comes with is just basically a storage device in simple terms. can someone who has access to another verizon active S3 sim try putting the card into their phone and checking the IMEI that the phone reports? does swapping the cards change the IMEI in other words. I do not think it will, but interested to know for sure.
i just started playing with one of these, but i feel realy confident you can get non 4G services to work without a sim in it.
cheers,
disco
Click to expand...
Click to collapse
You have it just about backwords. The sim is the real identifier on vzw 4g devices. You can take a working authorized sim and use it to activate another 4g Verizon phone and it will activate under the phone number associated with the sim.
Sent from my SCH-I535 using xda app-developers app

thats interesting, S3 still has an MEID also doesnt it?
thanks for the info!
cheers,
disco

disco_y2k said:
thats interesting, S3 still has an MEID also doesnt it?
thanks for the info!
cheers,
disco
Click to expand...
Click to collapse
There is still an ESN /MEID that the network uses to identify the phone for the CDMA side of the network. The process is all handled by the LTE SIM on LTE phones, though.
OP: You have a broken phone. The no-SIM error is not something that goes away. Take it to a store and get a new SIM and/or order a replacement.
Sent from my Amazon Kindle Fire using Tapatalk 2

im gonna have to dig in some more i am still not convinced the card is not a ruim card. like the other sprint and verizon world fones the imea is in the fone im pretty sure, until you instroduce another networks actual gsm card. i still the card it comes with is a simple ruim that holds the login info and other data, etc, well you know what ruim is.
does anyone have a service manual or white papers on this one yet? i would love to read through them.
thanks again bro
cheers,
disco

I'm still looking for an answer to this if anyone has any suggestions. Any way to get 3G without a SIM card?

Did you ever get a new phone from Verizon? It seems like an issue with your phone, not the network.

I have been trying something similar along the way as I have been able to get rock solid data by switching to EvDo only using the Phone Info app.
I gave determined I am connecting to a US Cellular tower when I have solid data.
But while in EvDo only I cannot send or receive calls or texts.
I am looking for a way to enable calls and text while in EvDo only mode.
Not trying to highjack just thought this is somewhat related.

TheBiles said:
Did you ever get a new phone from Verizon? It seems like an issue with your phone, not the network.
Click to expand...
Click to collapse
New phone and new SIM from Verizon seems to have made the problem less apparent, but it still happens, especially when driving through areas where reception is a bit spotty. It's really become an issue as I rely on getting emails for business, especially while traveling, and I don't get notifications of new emails if I have no data service which I don't become aware of until I actually look at the phone. Missed a couple of important emails/meeting invites because of this already...
Brenardo said:
I have been trying something similar along the way as I have been able to get rock solid data by switching to EvDo only using the Phone Info app.
I gave determined I am connecting to a US Cellular tower when I have solid data.
But while in EvDo only I cannot send or receive calls or texts.
I am looking for a way to enable calls and text while in EvDo only mode.
Not trying to highjack just thought this is somewhat related.
Click to expand...
Click to collapse
That would be fantastic if you come across something that will allow voice/text/EvDO(3G)! Have you made any headway on this? Would be glad to help in any way I can also to get this working.

black7 said:
I'm still looking for an answer to this if anyone has any suggestions. Any way to get 3G without a SIM card?
Click to expand...
Click to collapse
I flashed a VZW GS3 to Sprint. 3G data is working fine w/o a SIM card. If I put a non activated VZW card, data doesn't work obviously.
The trick in getting this to work is to use QPST to configure Profile 0 and Profile 1. When flashing to Sprint or Boost, you must also load a Sprint PRL into the device using QPST.
Sent from my SPH-L710 using Xparent SkyBlue Tapatalk 2

AlpineMan said:
I flashed a VZW GS3 to Sprint. 3G data is working fine w/o a SIM card. If I put a non activated VZW card, data doesn't work obviously.
The trick in getting this to work is to use QPST to configure Profile 0 and Profile 1. When flashing to Sprint or Boost, you must also load a Sprint PRL into the device using QPST.
Sent from my SPH-L710 using Xparent SkyBlue Tapatalk 2
Click to expand...
Click to collapse
Choose nv only, cdma evdo in phone info and program nv items and flash prl.
Sent from my SCH-I535 using xda premium

jclendineng said:
Choose nv only, cdma evdo in phone info and program nv items and flash prl.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
A little off subject but I how did you get it on sprint I'm trying to get mine on verizon prepaid and have it set to nv only. I must be missing somethin because my esn/meid all look right I get data but yet no calls

[Q] Sprint Google Samsung Nexus S Unlocking Problem

Okay Developers & Non-Developers, Simple Explanation to my Problem.
1)Sprint manufactures a phone with Contract lasting for 1 year. This is a CDMA phone. John buys this phone in USA.
2)After contract is over, John's Friend - Jill Takes his phone to India, Goes to Reliance CDMA Gallery and Unlocks this phone, She gets a New phone Number.
3)Now Jill is happily using the phone. Note that, She has RELIANCE network and her Phone number is "INSERTED" in the phone as this phone doesn't have a SIM Card Slot.
4)Jill deciedes to sell this phone to me. She ERASES everything including her number which was in the phone and sells it to me.
5)I already have a CDMA Reliance Phone. All i have to do is go to Reliance CDMA Gallery and "INSERT" my number in this phone.
6)When I go there, Reliance girl says "The person who used this phone before, we need her number in this". I say"But she deleted this number". She says"Get her number first or the phone is useless".
7)She does not answer her call.
8)My question- Is there anyway i can I) INSERT my Number into the phone?
(II)o something to the hardware so that I can Directly insert my CDMA Reliance SIM?
Awaiting Reply. Panic-Stricken! :crying:

You'd have to flash it yourself through CDMA WS, DFS, or qpst. Google them, but I think Dfs and qpst have free versions.. Make a backup of all the settings first through whichever flashing to you use though!
Sent from my EVO 4G LTE

Alright, so using DFS or QPST i have to FLASH another ROM in my phone? Or REPAIR stuff within it?

First off, I'm not a professional or very good at this
so be careful, in fact, if I were you, I'd have someone else flash the phone for me. Anyways, you're not flashing a ROM, you're flashing your number and and all the other stuff that goes with it to the phone. I'd use a donor cheap junk phone that's already flashed to your line, and copy the settings from there. Then experiment with the settings to get data/MMS working
Sent from my EVO 4G LTE

Is There a CDMA On/Off Setting?

With GSM it's easy - you take out your SIM card, and you are off that SIM's network.
Presumably the Nexus 5 will work for voice and 3G without the SIM card. Is there some way to turn off CDMA (yes, I know that if there is no SIM I can just turn off all cellular data. But that's not my question.)

If you mean temporarily, you can always do the old standby of airplane mode. Enable airplane mode, then enable whatever wireless services you want (Wifi, Bluetooth). The airplane mode will keep the cellular modem completely off.

ronwi2 said:
With GSM it's easy - you take out your SIM card, and you are off that SIM's network.
Presumably the Nexus 5 will work for voice and 3G without the SIM card. Is there some way to turn off CDMA (yes, I know that if there is no SIM I can just turn off all cellular data. But that's not my question.)
Click to expand...
Click to collapse
There should be options under networks to select cdma or gsm. Will find out tomorrow

lafester said:
There should be options under networks to select cdma or gsm. Will find out tomorrow
Click to expand...
Click to collapse
Now that the phone has been out in the wild for a while does anyone know the answer to this question?

The N5 does not allow voice or 3g without a sim for some reason. Perhaps someone will figure out a way to bypass this check at some point.
You can also pick and choose between gsm only, cdma only, lte only etc no problem.

lafester said:
The N5 does not allow voice or 3g without a sim for some reason. Perhaps someone will figure out a way to bypass this check at some point.
You can also pick and choose between gsm only, cdma only, lte only etc no problem.
Click to expand...
Click to collapse
So if you take out the SIM, and you are on Sprint, you can't make phone calls or use 3G data?
I know the Sprint LTE Iphones will work if the SIM is removed, just without LTE.
Maybe that's just a way of keeping things clear to the user - your phone has the identity of whatever SIM you have in at any given time.

lafester said:
The N5 does not allow voice or 3g without a sim for some reason. Perhaps someone will figure out a way to bypass this check at some point.
You can also pick and choose between gsm only, cdma only, lte only etc no problem.
Click to expand...
Click to collapse
That's kinda crappy. What if you want to use another CDMA only provider?

pclov3r said:
That's kinda crappy. What if you want to use another CDMA only provider?
Click to expand...
Click to collapse
I don't think it is compatible with any other CDMA only provider - certainly not with Verizon. Who else is there? Metro is going GSM/LTE.
Or perhaps the SIM is necessary to pick the CDMA provider - most CDMA phones are carreir specific, and they just default to the carrier associated with the phone. In other words, if you turn on an unactivated Sprint or Verizon phone, it automatically goes to the correct carrier. If the Nexus 5 has access to more than one CDMA carrier, perhaps the SIM is the method of selecting the carrier.
I

ronwi2 said:
I don't think it is compatible with any other CDMA only provider - certainly not with Verizon. Who else is there? Metro is going GSM/LTE.
Or perhaps the SIM is necessary to pick the CDMA provider - most CDMA phones are carreir specific, and they just default to the carrier associated with the phone. In other words, if you turn on an unactivated Sprint or Verizon phone, it automatically goes to the correct carrier. If the Nexus 5 has access to more than one CDMA carrier, perhaps the SIM is the method of selecting the carrier.
I
Click to expand...
Click to collapse
PagePlus is one who runs on Verizon and allows any phone. No LTE tho with them.
Also, The carrier on most CDMA phone is determined by the PRL file. This tells the phone which towers to communicate with and it can be changed.
http://en.wikipedia.org/wiki/Preferred_Roaming_List

pclov3r said:
PagePlus is one who runs on Verizon and allows any phone. No LTE tho with them.
Also, The carrier on most CDMA phone is determined by the PRL file. This tells the phone which towers to communicate with and it can be changed.
http://en.wikipedia.org/wiki/Preferred_Roaming_List
Click to expand...
Click to collapse
Presumably then the PRL is preloaded on the Nexus 5 - hence it knows to look for Sprint.
I believe Page Plus as a Verizon MVNO and will only activate Verizon phones, or their own (Page Plus) phones.

ronwi2 said:
I believe Page Plus as a Verizon MVNO and will only activate Verizon phones, or their own (Page Plus) phones.
Click to expand...
Click to collapse
They will activate any CDM phone for a except few exceptions such as if the phone is ESN banned on Verizon, PrePaid Verizon phones, Verizon iphones and Verizon blackberry devices. It's a well known unofficial policy.
To add backing of this you can see my signature
Due to hearing that problem I might look at a S4 or something. I generally like the build quality of Samsung much better than LG.

ronwi2 said:
So if you take out the SIM, and you are on Sprint, you can't make phone calls or use 3G data?
I know the Sprint LTE Iphones will work if the SIM is removed, just without LTE.
Maybe that's just a way of keeping things clear to the user - your phone has the identity of whatever SIM you have in at any given time.
Click to expand...
Click to collapse
Just checked again... you CAN make calls however data is unavailable.

lafester said:
Just checked again... you CAN make calls however data is unavailable.
Click to expand...
Click to collapse
Interesting, but doesn't really make sense that 3G data is unavailable. If you put a GSM LTE SIM in and select CDMA only, will it make calls on Sprint? (Don't mean to tell you what to do, but I think it would be an interesting thing to find out if you were so inclined.)

pclov3r said:
They will activate any CDM phone for a except few exceptions such as if the phone is ESN banned on Verizon, PrePaid Verizon phones, Verizon iphones and Verizon blackberry devices. It's a well known unofficial policy.
To add backing of this you can see my signature
Due to hearing that problem I might look at a S4 or something. I generally like the build quality of Samsung much better than LG.
Click to expand...
Click to collapse
Well, that might be an interesting back door into Verizon. I wonder if there is some way that the Nexus 5 can be flashed or otherwise work on Page Plus. I get there would be no LTE, however.

ronwi2 said:
Well, that might be an interesting back door into Verizon. I wonder if there is some way that the Nexus 5 can be flashed or otherwise work on Page Plus. I get there would be no LTE, however.
Click to expand...
Click to collapse
I hope so but i'm thinking it's going to require some software modification.

pclov3r said:
I hope so but i'm hearing it's going to require some software modification it appears.
Click to expand...
Click to collapse
I guess I really don't understand how CDMA works. With GSM, if the phone is unlocked, it works on any network. CDMA always seems to involve flashing. Although I believe there is so me sort of lock on CDMA phones as well (after all, MSL = Master Subsidy Lock.) I wonder if the CDMA side of the phone is locked to Sprint (we know from other posts there is an MSL code for these phones.)

ronwi2 said:
I guess I really don't understand how CDMA works. With GSM, if the phone is unlocked, it works on any network. CDMA always seems to involve flashing. Although I believe there is so me sort of lock on CDMA phones as well (after all, MSL = Master Subsidy Lock.) I wonder if the CDMA side of the phone is locked to Sprint (we know from other posts there is an MSL code for these phones.)
Click to expand...
Click to collapse
Sure, And you can obtain and change that.

pclov3r said:
Sure, And you can obtain and change that.
Click to expand...
Click to collapse
Is there a way to check the MSL settings without a Sprint SIM?
The #.#.3282#.#. dialer menu doesn't work with a T-Mobile sim...

satadru said:
Is there a way to check the MSL settings without a Sprint SIM?
The #.#.3282#.#. dialer menu doesn't work with a T-Mobile sim...
Click to expand...
Click to collapse
In my experience, none of the *#*#xxxxx#*#* codes work without the SIM inserted. You might even need to be activated on Sprint at the time.

Just to clarify, CDMA in this thread includes WCDMA(3g) too?
So the phone will either go GSM or LTE only, which 3g or HSDPA/HSPA are not available by options?

Problems with customized device and Sprint

I flashed the crDroid ROM onto my stock g7 Power, no problems. Flashed gApps and Magisk, everything ok. I did all of this while the device was unactivated and with the SIM card not in it. Everything works fine. But when I activated the device on the Sprint network and inserted the SIM card, I get no data. I know people have said you can manually edit the APNs in the Mobile Network settings, but the problem for me is, there is no APN option in that menu. However, when I remove the SIM card, I DO see the APN settings option there, but of course the whole menu is grayed out because the SIM card is removed. Has anyone else been able to customize and root one of these phones for use on the US Sprint network? Should I use a different ROM? Any suggestions would be helpful.

Tsuroshi said:
I flashed the crDroid ROM onto my stock g7 Power, no problems. Flashed gApps and Magisk, everything ok. I did all of this while the device was unactivated and with the SIM card not in it. Everything works fine. But when I activated the device on the Sprint network and inserted the SIM card, I get no data. I know people have said you can manually edit the APNs in the Mobile Network settings, but the problem for me is, there is no APN option in that menu. However, when I remove the SIM card, I DO see the APN settings option there, but of course the whole menu is grayed out because the SIM card is removed. Has anyone else been able to customize and root one of these phones for use on the US Sprint network? Should I use a different ROM? Any suggestions would be helpful.
Click to expand...
Click to collapse
Hey there... This is just a possibility...
A while back, I put my sister's CDMA sim into a custom Rom-ed phone. Couldn't add an APN for the life of me. And then, duh , it turns out it was because the phone radio was set on LTE/UMTS (auto)... Is your radio set for LTE/CDMA?

motolio said:
Hey there... This is just a possibility...
A while back, I put my sister's CDMA sim into a custom Rom-ed phone. Couldn't add an APN for the life of me. And then, duh , it turns out it was because the phone radio was set on LTE/UMTS (auto)... Is your radio set for LTE/CDMA?
Click to expand...
Click to collapse
Turns out it was on "LTE/CDMA/UMTS auto (PRL)". I changed it to "LTE/CDMA auto (PRL)" which is what the Sprint network uses, I'm pretty sure. That did seem to change some things, but I still don't see any APN settings and I still don't have data, unfortunately.* I think this ROM is just not set up to work on the Sprint network? Maybe I'll try flashing a different one.

Tsuroshi said:
Turns out it was on "LTE/CDMA/UMTS auto (PRL)". I changed it to "LTE/CDMA auto (PRL)" which is what the Sprint network uses, I'm pretty sure. That did seem to change some things, but I still don't see any APN settings and I still don't have data, unfortunately.* I think this ROM is just not set up to work on the Sprint network? Maybe I'll try flashing a different one.
Click to expand...
Click to collapse
Here's a how to video on getting a working apn in a device. Works perfectly on my end.

Tsuroshi said:
I flashed the crDroid ROM onto my stock g7 Power, no problems. Flashed gApps and Magisk, everything ok. I did all of this while the device was unactivated and with the SIM card not in it. Everything works fine. But when I activated the device on the Sprint network and inserted the SIM card, I get no data. I know people have said you can manually edit the APNs in the Mobile Network settings, but the problem for me is, there is no APN option in that menu. However, when I remove the SIM card, I DO see the APN settings option there, but of course the whole menu is grayed out because the SIM card is removed. Has anyone else been able to customize and root one of these phones for use on the US Sprint network? Should I use a different ROM? Any suggestions would be helpful.
Click to expand...
Click to collapse
Did you ever get it going? When I install Pixel Experience + I have no apns at all. Not in system/product/etc or product/etc which is where they are supposed to be located. So I just paste apn.conf.xml in the system/product/etc and set 0644 then go to networks and internet/mobile networks/access point names and hit reset to default and data's on , reboot afterwards and it's all fine. What's your model # on your device? Also are you sure your sim card isn't damaged? When they crack sometimes it's impossible to see with the naked eye. And technically you're not on Sprint anymore you're on T-Mobile because they finally finished the deal and Tmo now owns Sprint. (Which is a really good thing imo) ;p if and when you do get your issue resolved be sure and save your apn.conf.xml and upload it to Google drive or something so you'll have it if you need it again. I noticed that the first APN xml files I linked you to I had apn.config.xml for the name and that's not correct supposed to be apn.conf.xml My bad on that. Sometimes I drink a lot of coffee. [emoji41]
Sent from my [device_name] using XDA-Developers Legacy app

Is sprint already not cdma?

motolio said:
Is sprint already not cdma?
Click to expand...
Click to collapse
No nothing has changed at this time. Sprint's still CDMA
Sent from my moto g(7) power using XDA-Developers Legacy app

flash713 said:
No nothing has changed at this time. Sprint's still CDMA
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All cdma phones go both ways since around 2015 cdma phones don't use sim card for calling or texting if u use the data then u use sim card aka gsm.Sprint is not going to change for at least 3 years on there current phone plans as for going to gsm only do not know as most companies are fashing out cdma cause it old tec .That is what I have found out from T-Mobile web sight

roadkill42 said:
All cdma phones go both ways since around 2015 cdma phones don't use sim card for calling or texting if u use the data then u use sim card aka gsm.Sprint is not going to change for at least 3 years on there current phone plans as for going to gsm only do not know as most companies are fashing out cdma cause it old tec .That is what I have found out from T-Mobile web sight
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Please tell me more about CDMA also using GSM because they are two different technologies.. CDMA was used by USA military back in ww2 to send messages safely and GSM is what most the world uses. CDMA has always been more of a USA tech while GSM has always been pretty much what everyone else uses. They both send information in different ways. They do not work the same or together far as I know.
If you want to be more compatible with development use a GSM carrier like Metro, T-Mobile because GSM is what still rules the world far as phone tech goes. And we here in the USA only make up a small piece of the world far as development goes.