Database Users

[Q] No connection for calls/SMS but data works?

My SIM unlocked Defy has been sitting unused on the shelf for several months - I did plan to sell it after upgrading to an Atrix, but never quite found the time to sort it out.
I've now decided to pass the Defy on to my girlfriend as a Christmas present (yeah, I'm a tightwad ), but have not been able to get it to work correctly.
The problem is this. The Defy will not connect to the network to send or receive calls or SMS messages. However, the phone can connect to data services via 3G (even though, on my Giffgaff SIM, it gives some sort of error message saying connection will not be possible, before accessing the internet without problems!).
I've tried:
Multiple Basebands - including the various ones I used previously without any problems.
Multiple ROMs - CM7, MIUI, WajkIUI installed via CWM and a couple of Froyo SBFs installed using RSD. All these ROMs show the same characteristics - no calls or SMS but Data connections work.
Multiple SIMs on different networks. The Defy was originally a T-Mobile device but I unlocked this using a code from one of the Unlock sites and used it with an Orange SIM then my Giffgaff SIM with no problems. Now, the very same Giffgaff SIM shows the call/SMS problem. My girlfriend's T-Mobile SIM appears to be recognised normally and the network seems to be working but all calls and SMS messages fail instantly.
Multiple Wipes/Resets using both CWM and the stock recovery. None has resolved the problem.
A quick Google found the following link:
http://thewichitacomputerguy.com/blog/how-i-fixed-your-sim-card-does-not-allow-connection-network-g1
Unfortunately, I've tried everything recommended on that page without success.
Anybody have experience of this problems on their Defy and, if so, can anybody tell me how I can fix it?
I promised my girlfriend a phone so, if I can't get this Defy working properly, it's going to cost me a few quid so I would appreciate any assistance!

I've since discovered that my problematic Defy appears to have been blacklisted, almost certainly by accident by those wonderfully incompetent folks at Orange. Here's more information on a problem which has occurred with quite a few people here in the UK following the merger of the Orange/t-mobile networks in mid-December:
http://forums.moneysavingexpert.com/showthread.php?t=3677593
I bought the phone on eBay from a seller and used it for around six months without any problems so I think it incredibly unlikely that the blacklisting is valid - I mean, who would report a phone as stolen around 8 months after it was taken?!?
Just waiting to hear back from the eBay seller to see if he can provide me with his original proof of purchase for the phone so I can get the blacklisting lifted. I don't rate my chances all that highly.

Hi all. sorry to revive a few month old thread, but at least I'm not creating a whole new one!
I have a Motorola Defy. Generally I'm pretty geeky, but I decided to root it at install ICS 4.0.4... it all went well... eventually. However I have no conectivity to my network. It will not send or receive texts calls or data to the network. Wifi does work still.
Honestly I'm done screwing around with it. I just want to restore it back to original factory settings and admit defeat. Where can I find the original firmware that will work In canada on the Telus network? This is my only phone, I have no other cell and no landline so I'm kinda in a pickle and would appreciate anything you could do to help me get up and running again.
If there is any more info you need just ask, I'll try to get it for you.

Try it with this baseband switcher. Maybe it will help you.

Thanks! I actually just saw your post, but I figured that out all by myself! It did work though! I appreciate the reply!

ok new problem... everytime I shut off my phone it reverts back to the wrong baseband. any idea on how to keep it on the new one? every time i reboot I have to swithc baseband then do a restart. it them switches and works perfect. If i shut the phone off it reverts and I have to go over it all over again.

Try to convert defy baseband switcher to a system app with Titanium backup.

Vicsa said:
Try to convert defy baseband switcher to a system app with Titanium backup.
Click to expand...
Click to collapse
Thanks Vicsa! Used Apps2ROM (ROOT) instead because I'm cheap, but had the same effect. You sir are awesome!
And now that my phone is working again perfect I'll be leaving the F***ing thing alone now unless i'm absolutely 100% sure what I'm doing. Generally I have no issue doing things like this to computers, but it would seem that phones are a whole new breed... Anyways THANK-YOU!!!!

You're welcome mate. Glad I could help you

[Q] Unlocked G2 on emergency calls mode only.

Hi all,
This is my case with the hope of getting any help or lead in order to solve my problem:
After a long research I bought an brand new LG D800 already sim unlocked in the US and brought it to my country (Costa Rica). I made sure the frequencies supported by the D800 are the ones used in my country. In fact 2 years ago I bought another phone that uses same frequencies and had had no problems ever.
As soon as getting in my country I placed the SIM card I'm using in my current phone into the G2 and it recognized the signal and connected to the operators network. I started to make and receive calls almost immediately, and also SMS' without issues. So I started to migrate all my data from the current phone into the G2. I used Titanium Backup for this, so I rooted first the phone using the guide I found here, and basically what I did is installed the apps from Google Play and then restored data using Titanium.
After the second day of use suddenly I found out that I wasn't able to make or receive calls since the phone lost connection to the operators network only allowing emergency calls but the signal bars were full (see scren capture). Sometimes when restarting the phone I get "Phone not allowed MM6" message just after the phone tries to connect to the operators network.
Went to the phone company offices and they tried to help me and made some simple tests, without changing anything inside, such as checking Android's network configurations, checking in their system to verify the IMEI wasn't blocked or reported (the IMEI is clean), also checked the sim configuration and after more than 45 minutes they were not able to find anything wrong in their system or with the phone itself. They also made a final test taking a working sim and put it into the G2 and gatting same emergency calls mode, and took my sim from the G2 and put it in another phone and that phone was able to make and receive calls. So they concluded that the phone has a "built-in" configuration or damage that impedes the phone to connect to the network. They finally suggested to ask the seller to apply the waranty, which is not a viable option since I'm not in the US anymore. This G2 is using the stock ROM (see screen captured).
I've been in close contact with the seller, and he had shown interest in this case but unfortunately hasn't been able to provide much support or help to solve the issue. He reports that he has contacted other buyers of this same phone, also sim unlocked by him, and they all are using their G2s normally. Didn't provide where their locations are tough.
My own conclusions here are that the G2 IMEI is not blocked by the phone company, that there is some kind of fault in the phone that when trying to connect to the network, the network doesn't "like" and rejects connection, althought it worked at the begining, and I'm not able to determine if the fault is software or it's in the hardware of the phone.
So I'm trying to understand what my options are at this moment:
Try to return the phone to the seller, or ask an LG representative in my country to change the unit. Which seems to be very difficult.
Reflash the unit with a stock ROM and reestablish the warranty. But being unsure if this will solve the issue.
Reflash the unit with a new ROM and loose the warranty, and again, being unsure the issue will be solved.
I'm really frustrated and at this moment and have no idea on what to do.
Any ideas or insight will be appreciated.
Thanks.
NOTE: I reinitialized the unit and lost any signal (see screenshots) but received update notifications from Google Play and was able to upload the screenshots into my Dropbox although no signal is shown in the status bar and no WiFi connection is established, only data connection thru APN (I Assume).

Go into status, what's IMEI say?
Sounds like EFS issues. I take it you didn't back it up after setting up on carrier and flashing?
Of so, you have some manual work to do with diag mode and a couple apps via pc.

Hi Steamer;
Under status I see 3 items:
1) Phone Number: shows"Unknown".
2) IMEI: shows the number printed on the box, on a sticker on phone's back.
3) IMEI SV: shows"03".
Where can I learn more about EFS issues? Are there tutorials?
As you say I haven't done any backup thing.
Sent from my LG-D800 using xda app-developers app

Steamer86 said:
Go into status, what's IMEI say?
Sounds like EFS issues. I take it you didn't back it up after setting up on carrier and flashing?
Of so, you have some manual work to do with diag mode and a couple apps via pc.
Click to expand...
Click to collapse
Hi again Steamer:
After reading quite a bit about EFS issues now I understand much better what you meant with your post.
And as you said I didn't back up efs folder, I even didn't flash any ROM yet in the unit. The only thing I did was a 'hard reset' to the unit using the Power + Vol. Down method, after having several 'com.android.phone' errors due to backing up data from Titanium.
The phone went to factory state, I put the sim card and everything went back to normal again, meaning that I was able to make and receive calls. Like 4 hours later the phone went to emergency calls only mode, and from then on I'm not able to take it out of that mode.
So I wonder if the efs folder could corrupt after that factory reset. Is it possible?
Thanks again and any light is greatly appreciated.

It is not in its own partition on this device, but in system. A hard reset shouldn't have caused corruption, but it is not impossible. Your IMEI is intact then, that is good. From what you said about it working partially, your EFS is most likely fine as well. There is a thread here to get files with custom recovery zip file, or you can use adb commands to do it yourself. I don't have guides off hand, but Google is your friend, just specified this phone in searches. Try a new SIM. Sounds more like SIM /carrier issue now as you are out of "activation". That is why emergency is popped and unknown number. The SIM itself may and most likely is bad(or carrier has an issue with your account), in turn it can't communicate with the server causing non activation on network search. Priority to SIM.

franz_cr said:
Hi again Steamer:
After reading quite a bit about EFS issues now I understand much better what you meant with your post.
And as you said I didn't back up efs folder, I even didn't flash any ROM yet in the unit. The only thing I did was a 'hard reset' to the unit using the Power + Vol. Down method, after having several 'com.android.phone' errors due to backing up data from Titanium.
The phone went to factory state, I put the sim card and everything went back to normal again, meaning that I was able to make and receive calls. Like 4 hours later the phone went to emergency calls only mode, and from then on I'm not able to take it out of that mode.
So I wonder if the efs folder could corrupt after that factory reset. Is it possible?
Thanks again and any light is greatly appreciated.
Click to expand...
Click to collapse
Hi i have similar issue with my LG G4 H818P dual sim... after factory reset i often face emergency calls only issue despite full signals... sometimes i able to make and receive calls but most of the time despite my sim registered on network and i get full signals when someone tries to call me he get message as my cell is off.... really annoyed and i flashed latest rom v10e but same issue. Same sim when i use in note 3 then no issue what so ever
Sent from my SM-N9005 using XDA Free mobile app

I had the same issues. Bought in Us using now in India. Go to settings..tethering&networks.. mobile networks... international data roaming and select standard data. Switch off and switch on your phone .
This will happen when you use, internet over gsm. If you disable internet or if your phone loses signal while switching between edge and 3g/4g data, this is tend to happen.

Similar Problem
I have an lg vs980 and I was using it with H2O wireless and later I changed to Simple Mobile. I'm living in Puerto Rico. The phone was working all right and, suddenly, one day it was always displaying 'emergency calls only'.
I did factory reset, then I reflashed stock lollipop and it was like nothing happened, keeps displaying 'emergency calls only'.
Then I found this post http://forum.xda-developers.com/show....php?t=2394689 and applied the patch but didn't seem to resolve the problem.
As a last resort I tried flashing cm 12.1 and before first boot applied the patch from the cited thread but no result, keeps displaying 'emergency calls only'.
Has anyone found a solution to this problem?

s5: incoming calls no icon??

i have bought a new s5 and haveno incoming calls unless i turn wifi off, then it works fine
sim card has been replaced, samsung have even replaced handset and exactly same occurs
i have turned off 4g so its only on 3g/2g
the network have turned off all call barring etc settings
if i put my sim in my old S3 it works flawless, if i put my wifes sim in my s5 it also works flawless
network or samsung cant work it out, its been factory reset like 6 times now its driving me mad
thanks Kplus

You didn't provide any detailed information about your phone model, firmware or even a step by step description of how you did a factory reset. So we have no way of discerning whether you missed any essential steps or narrow anything down.
Nevertheless you have an odd problem that no one else seems to be reporting. Ergo the most likely explanation is odd settings or corruption on your phone. As a factory reset (clearing user settings) apparently didn't work, the most plausible remaining cause would be a cache problem or some anomaly in your system files.
To that end, try wiping the cache from recovery mode. If that doesn't help, then use Odin to write a full stock firmware to your phone to replace the system files as well. If your problems persist then open a support ticket with your carrier to look into your account configuration. The latter is unlikely though if the SIM works in another phone. So in as much as we can tell given the paucity of details, you should try replacing your system files with Odin. Also check your APN information.
.

my phone s5 world version 4.4.2 32gb

S5 incoming calls delayed
fffft said:
You didn't provide any detailed information about your phone model, firmware or even a step by step description of how you did a factory reset. So we have no way of discerning whether you missed any essential steps or narrow anything down.
Nevertheless you have an odd problem that no one else seems to be reporting. Ergo the most likely explanation is odd settings or corruption on your phone. As a factory reset (clearing user settings) apparently didn't work, the most plausible remaining cause would be a cache problem or some anomaly in your system files.
To that end, try wiping the cache from recovery mode. If that doesn't help, then use Odin to write a full stock firmware to your phone to replace the system files as well. If your problems persist then open a support ticket with your carrier to look into your account configuration. The latter is unlikely though if the SIM works in another phone. So in as much as we can tell given the paucity of details, you should try replacing your system files with Odin. Also check your APN information.
.
Click to expand...
Click to collapse
I'm on AT&T and having the exact same problem. I switched from Verizon as AT&T has a new tower in my rural area for better reception. I have 3 bars in my home and when talking on the phone it goes up to 4 bars. No problem calling out. Purchased the new Samsung Galaxy S5 on 9/15/14.
Incoming calls go directly to VM. Sometimes the phone works as it should and calls and messages came thru in a timely manner.
Mostly the calls go to VM and text messages are delayed. Vm doesn't show up as having a vm for hours.
I have gotten a new sim card, exchanged the phone and the new phone does exactly the same thing, I am now past my 14 days so I am stuck with this phone unless I agree to a warranty replacement phone from AT&T. (Same phone S5)
I have has 4 cases with AT&T and nothing has helped. Last case will be resolved bu Oct 4.
I will try turning off WIFI while at home and see if that helps.
I have reset the new phone, did not help. I don't understand why with 3 bars I can't receive calls.
Calling out is no problem. Incoming doesn't work correctly. Any suggestions are greatly appreciated. Thanks in advance.

kplusonline said:
i have bought a new s5 and haveno incoming calls unless i turn wifi off, then it works fine
sim card has been replaced, samsung have even replaced handset and exactly same occurs
i have turned off 4g so its only on 3g/2g
the network have turned off all call barring etc settings
if i put my sim in my old S3 it works flawless, if i put my wifes sim in my s5 it also works flawless
network or samsung cant work it out, its been factory reset like 6 times now its driving me mad
thanks Kplus
Click to expand...
Click to collapse
Friends of mine were at my house over the weekend and he had a samsung s4 and had the same problem after logging onto my wifi. It is the wifi causing the problem. I had an old modem and netgear router that we hooked up and then we were able to receive calls like you should. We switched out the modem/router combo on Sat to my older setup and my phone is still working normally! I called my dsl provider and told them about the problem as I just bought the modem/router combo from them recently.
They never heard of anything like this. I do find it hard to believe that the home wifi equipment disrutes the cell phone signal. But my phone is now working!!! Anyone ever heard of this or that can explain why this would happen I would love to hear about it.

[Q] Verizon apps + Root + Move to TMo

I upgraded my unrooted Galaxy S5 to lollipop and it was bad, slow, freezing a lot. I disabled many Verizon-bloatware apps and lollipop is now a buttery smooth beautiful thing!
What pros & cons would rooting a phone generally give me for an average user's experience?
Most importantly, I'm looking to take & convert this S5 phone (and my daughter's Galaxy S3) to T-Mobile this weekend and want to make it all T-Mobile ready. Any insight, thoughts, suggestions, especially if I wanted to root or factory reset my phone but keep app data (such as Kung Fu Pets )?
I've been told by friends and cell providers these phones are already unlocked and can easily switch networks, no worries of voice or data settings on my part, TMo's WiFi calling will work as if I bought the phone from TMo, etc.
Thanks all!

KCSamerica said:
I upgraded my unrooted Galaxy S5 to lollipop and it was bad, slow, freezing a lot. I disabled many Verizon-bloatware apps and lollipop is now a buttery smooth beautiful thing!
What pros & cons would rooting a phone generally give me for an average user's experience?
Most importantly, I'm looking to take & convert this S5 phone (and my daughter's Galaxy S3) to T-Mobile this weekend and want to make it all T-Mobile ready. Any insight, thoughts, suggestions, especially if I wanted to root or factory reset my phone but keep app data (such as Kung Fu Pets )?
I've been told by friends and cell providers these phones are already unlocked and can easily switch networks, no worries of voice or data settings on my part, TMo's WiFi calling will work as if I bought the phone from TMo, etc.
Thanks all!
Click to expand...
Click to collapse
This is my opinion only, with that being said for the average user there is no advantage to being rooted. The average user is not interested in flashing new roms or freezing apps beyond what Verizon allows. The average user wants to turn on their phone and go on their merry way. If something goes wrong they want to call Verizon and have they fix it for them. They would never touch Odin.
With that being said, because your in this forum your more than the average user. If you wan to freeze or uninstall more Verizon/Samsung bloat you need to be rooted.
As for moving to a different carrier I'll let some one who has done that chime in.

jrv331 said:
This is my opinion only, with that being said for the average user there is no advantage to being rooted. The average user is not interested in flashing new roms or freezing apps beyond what Verizon allows. The average user wants to turn on their phone and go on their merry way. If something goes wrong they want to call Verizon and have they fix it for them. They would never touch Odin.
With that being said, because your in this forum your more than the average user. If you wan to freeze or uninstall more Verizon/Samsung bloat you need to be rooted.
As for moving to a different carrier I'll let some one who has done that chime in.
Click to expand...
Click to collapse
Thanks! It won't be a Verizon phone for long, so I guess with rooting it and installing a known stable release be a good idea to get rid of Verizon's bloatware (and maybe some of Samsung's) while keeping a good, hard-working phone? I noticed a big difference disabling what I'm allowed to with Verizon's apps and maybe that's enough, I don't know - any place to research which Verizon and/or Samsung apps are safe to disable (if rooting it & installing a stable release doesn't already remove them)?
Oh, also, is there where I'll go to get future updates since I'll no longer be part of Verizon, and T-Mobile will probably not update my phone since I didn't buy it from them?
Thanks again!

Through a couple phone calls, T-Mobile reassured me both my S3 and S5 would work just fine, everything just the same except I'll have to make sure the phone is unlocked. They also said on both calls that their WiFi calling would most definitely work. Verizon, though a half dozen calls, gave me a different "unlock" story each time. So much for trying to be prepared...
Neither the S3 or the S5 work as expected. The S3 uses the far inferior network speeds and takes about 3 minutes just to send a pic text, and that's only if we're using Hangouts - stock Messages or Verizon's Messages+ don't work on the S3. The S5, I get a lot of "Data (Network) connection lost", setting the time errors, I can't access my voicemail or change my voicemail phone number (not sure if that is a new issue).
So with all this in mind:
1) is the S3 using an inferior data speed network due to hardware limitations or settings I can change?
2) would rooting my S3 and S5 alleviate a lot or all of these issues?
3) any way to get TMo WiFi calling to work on a Verizon phone? Would rooting it allow me to install a TMo version Android?
4) how do I go about updating Android on these phones now that they're off Verizon and not officially TMo phones?
5) any suggestions to fix any or all of these other issues?

KCSamerica said:
Through a couple phone calls, T-Mobile reassured me both my S3 and S5 would work just fine, everything just the same except I'll have to make sure the phone is unlocked. They also said on both calls that their WiFi calling would most definitely work. Verizon, though a half dozen calls, gave me a different "unlock" story each time. So much for trying to be prepared...
Neither the S3 or the S5 work as expected. The S3 uses the far inferior network speeds and takes about 3 minutes just to send a pic text, and that's only if we're using Hangouts - stock Messages or Verizon's Messages+ don't work on the S3. The S5, I get a lot of "Data (Network) connection lost", setting the time errors, I can't access my voicemail or change my voicemail phone number (not sure if that is a new issue).
So with all this in mind:
1) is the S3 using an inferior data speed network due to hardware limitations or settings I can change?
2) would rooting my S3 and S5 alleviate a lot or all of these issues?
3) any way to get TMo WiFi calling to work on a Verizon phone? Would rooting it allow me to install a TMo version Android?
4) how do I go about updating Android on these phones now that they're off Verizon and not officially TMo phones?
5) any suggestions to fix any or all of these other issues?
Click to expand...
Click to collapse
1) probably, but I haven't checked the specs.
2) probably not. The APN in your phone needs to be changed to the right settings for your mobile carrier. It's under Settings/More Networks/Mobile Networks. You should be able to google the settings for TMo.
3) The APN may resolve the issue, if the phone allows for it.
4) If you root, you can do it. You may be able to get OTAs with the new sim, but I can't for Consumer Cellular.
5)Again, the APN will solve a lot of issues. The voicemail number needs to be changed to your carrier's voicemail number under Phone Settings.
5)

Rapunzl said:
1) probably, but I haven't checked the specs.
2) probably not. The APN in your phone needs to be changed to the right settings for your mobile carrier. It's under Settings/More Networks/Mobile Networks. You should be able to google the settings for TMo.
3) The APN may resolve the issue, if the phone allows for it.
4) If you root, you can do it. You may be able to get OTAs with the new sim, but I can't for Consumer Cellular.
5)Again, the APN will solve a lot of issues. The voicemail number needs to be changed to your carrier's voicemail number under Phone Settings.
5)
Click to expand...
Click to collapse
1) probably hardware limitations or probably settings I can change?
2 & 3) the APN was already set by the TMo in-store rep, and google search confirms it's the correct setting.
5) voicemail number just won't change! Ug, I've google searched this issue too, no luck, and it seems many Android 5.0 users have this issue unless they factory reset - an option I'm hoping to avoid for a last resort.
I have noticed by disabling Verizon apps, much is working better, but I'm wondering if Verizon made these apps imperative for the system to run properly...?

KCSamerica said:
1) probably hardware limitations or probably settings I can change?
2 & 3) the APN was already set by the TMo in-store rep, and google search confirms it's the correct setting.
5) voicemail number just won't change! Ug, I've google searched this issue too, no luck, and it seems many Android 5.0 users have this issue unless they factory reset - an option I'm hoping to avoid for a last resort.
I have noticed by disabling Verizon apps, much is working better, but I'm wondering if Verizon made these apps imperative for the system to run properly...?
Click to expand...
Click to collapse
How did you disable the apps? If you used TiBU, there have been discussion of issues in some threads.

Rapunzl said:
How did you disable the apps? If you used TiBU, there have been discussion of issues in some threads.
Click to expand...
Click to collapse
I used the Android's built-in disable feature (since it won't let me uninstall it).

KCSamerica said:
I used the Android's built-in disable feature (since it won't let me uninstall it).
Click to expand...
Click to collapse
The only thing I can think of then, is that one or more of the disabled features are required to make things work properly. I would unfreeze the apps and then freeze them, one-by-one to find out which are causing the issues. Other than that, Kies may be able to repair the install if you don't have luck with unfreezing the apps.

Rapunzl said:
The only thing I can think of then, is that one or more of the disabled features are required to make things work properly. I would unfreeze the apps and then freeze them, one-by-one to find out which are causing the issues. Other than that, Kies may be able to repair the install if you don't have luck with unfreezing the apps.
Click to expand...
Click to collapse
Easiest step is to try the enable/disable apps as you suggested. Have you, or anyone out there, tried loading another's stock software onto a phone before doing a factory reset?
See this page: http://www.andromods.com/download-files/tmobile-galaxy-s5-stock-firmware-sm-g900t.html
It gives me the impression all S5's are the same hardware. If that's true, then why can't I install TMo's stock software in the recovery partition, then do a factory reset? (Another worse case scenario, but possibly more of a thorough cure)

KCSamerica said:
Easiest step is to try the enable/disable apps as you suggested. Have you, or anyone out there, tried loading another's stock software onto a phone before doing a factory reset?
See this page: http://www.andromods.com/download-files/tmobile-galaxy-s5-stock-firmware-sm-g900t.html
It gives me the impression all S5's are the same hardware. If that's true, then why can't I install TMo's stock software in the recovery partition, then do a factory reset? (Another worse case scenario, but possibly more of a thorough cure)
Click to expand...
Click to collapse
If you read toward the end of that post, it says:
Before download check your model number and software version, head to Settings -> About. Confirm that you get the correct firmware that match with the model number of your device, and never use a firmware that isn’t built for your S5, downgrade is also not recommended.
Click to expand...
Click to collapse
I've also seen a thread talking about doing this for a TMo user on the Verizon S5, but I'm on Consumer Cellular, so I'm not sure if it would really work. Even if it does, I'm not sure if that would solve your issues, and I hear you're risking bricking your phone attempting it.

Not sure if I already mentioned, but sadly a couple T-Mobile reps assured me everything would work great. Not. A factory reset did help a lot, but I keep getting these oddities that TMo is now saying I just have to live with, now that my trial period is over. So any ideas and help would be great!
"Data network unavailable" often appears after a phone call and lasts for a few seconds or longer. In that time, I can't get Maps to find anything, among other issues. This error appears at random times otherwise, but most consistently after a phone call.
"SIM error" happens periodically. I'm not sure the pattern yet, but maybe after a couple phone calls in a row, or call swapping. The only way to fix this is to reboot the phone.
The top status bar bounces between "H+" and "3G". I haven't found a pattern as to when or why, but often can't do much with the phone until it settles down, if it settles down.
Everything I've read and originally heard lead me to believe this S5 should work much better than it is, as if some APN or data setting is wrong. I've triple checked and they seem to be set properly, but I don't know anymore...

Urgent : Unlocked at&t s7 No Signal at all; sim slot/antennae fine

Hi guys,
Been into android modification since 7 years but gave up since my last 2 phones. So i got this unlocked at&t galaxy s7 in uae and it worked like charm, the network and coverage. I then started usingthe phone in pakistan too and it worked well even here. So one day i connected to gear vr so that i can initiate the oculus data installation as first time setup but the gear vr kept on disconnecting automatically. I have used it before too but never had problem. Then i rebooted the phone and i find that i have no signals at all even though my sim contacts are being displayed and there is no “no sim” message on statusbar even. But dont have any signals at all. I then inserted my sim to iphone and it was working perfect. Then i inserted different carriers sims to s7 but yet they werent working even. I then cleared the cache, factory reset, cleaned the sim slot and the sim , but no success. I left ky ohone turned off for days andeven drained battery 100% many times to calibrate and perform hardware reset but no success. I then sent the phone back to uae for repairing from my friend as i thought that the antennae were the one’s responsible but before he even thought of disassembling the ohone, he inserted uae sim and it worked perfectly. Call and data were working perfectly. Any idea what is the problem? Kindly let me know pleaseeee. Is there any problem with frequency? Like gsm or cdma? But the phone worked before. I tried to enter the settings of manually selecting networks but there was error popup “No service and signal”. Signal strength 0asu -113dvm

Loki_GOM said:
Hi guys,
Been into android modification since 7 years but gave up since my last 2 phones. So i got this unlocked at&t galaxy s7 in uae and it worked like charm, the network and coverage. I then started usingthe phone in pakistan too and it worked well even here. So one day i connected to gear vr so that i can initiate the oculus data installation as first time setup but the gear vr kept on disconnecting automatically. I have used it before too but never had problem. Then i rebooted the phone and i find that i have no signals at all even though my sim contacts are being displayed and there is no “no sim” message on statusbar even. But dont have any signals at all. I then inserted my sim to iphone and it was working perfect. Then i inserted different carriers sims to s7 but yet they werent working even. I then cleared the cache, factory reset, cleaned the sim slot and the sim , but no success. I left ky ohone turned off for days andeven drained battery 100% many times to calibrate and perform hardware reset but no success. I then sent the phone back to uae for repairing from my friend as i thought that the antennae were the one’s responsible but before he even thought of disassembling the ohone, he inserted uae sim and it worked perfectly. Call and data were working perfectly. Any idea what is the problem? Kindly let me know pleaseeee. Is there any problem with frequency? Like gsm or cdma? But the phone worked before. I tried to enter the settings of manually selecting networks but there was error popup “No service and signal”. Signal strength 0asu -113dvm
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Forgot to tell, my phone has never been rooted, i even tried to enable/disable “Enable hd LTE features” but no luck. Its on 7.0. Dont recieve OTA. Not blacklisted either. Pakistan doesnt have CDMA. I have even noticed it recieving weak signals compared to my iphone when the phone was working ok. And my radio is showing to be off and when i turn it on from the dial code menu. It doesnt keep turned on and it turns off automatically. I still have the imei amd baseband version. Dunno what the issue is.

Kindly reply guys
Please help

Loki_GOM said:
Please help
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Settings>connections>mobile networks> apn settings or access point names
Manually enter your carriers information you'll have to ask them or look it up online sure its easy to find they might even help you in store
Its not good for you to buy these US phones outside of the US because changing CSC to INS/INU/PAK could prove to be difficult being it was never supported by snapdragon G930A model but only exynos G930F although it's not impossible
/system/csc/others.xml is where your answers are waiting for you unless you update to oreo then it'll be in /system/omc/cscfeature.xml and cscfeature_network.xml
You will need a root file manger to be able to see what I'm talking about then you will have to figure out what those "strings" mean
Unless you want to mod and figure out make your phone awesome just flash other US firmware that uses gsm network only i think ATT only uses gsm and you can root to debloat ect.
Here's a method for rooting
https://forum.xda-developers.com/verizon-s7-edge/how-to/root-s7-s7edge-oreo-nougat-t3819616/amp/
I'm sure there's people in your surrounding area that are into androids and rooting that understand and can help you figure things out if you know any one woth a G930F/G935F INS/INU/PAK thatd be awesome. If your imei number is truly gone from your phone its should still be on the back of the phone
I know this isn't the best help but you aren't the first post I've seen of Pakistanian with US S7 tryjng to figure it out.. idk if he ever did but if you learn you can help others as well
*note: when I say change csc I don't mean flashing firmware in odin, that is impossible. I mean porting it yourself with root like in the link below this one
*another note: I am not saying use the link below as anything other than an example because again that link was developed for Eynos phones and not your snapdragon so it probably wouldn't work but just so you have an idea of csc
forum.xda-developers.com/s7-edge/development/utility-flashable-csc-selection-30-t3392957/amp/