Develop Bugs

[Q] Why am I not getting signal at all...anywhere?

I just got a G2. perm rooted it. and everytime upon booting up it has signal for 1 second then literally just disappears and never comes back. can't choose mobile network or anything because it can't search for it. tried doing *#*#infor#*#* and it says GSM ONLY and everytime i try to change it to WCDMA PREFERRED it keeps reverting back as soon as i exit. the only way i've been able to get signal back so far is to connect to wifi and enable wifi calling, then after disconnecting i'm able to get signal and i'm able to check the WCDMA PREFERRED option but awhile ago i was on wifi calling then left my house and it was disconnected but wasn't able to get signal again.
can anyone help me with what i should do because although i might be able to get it back through wifi calling, this will be very problematic whenever i'm not near my normal wifi locations...
thanks for the help

Eh... I would try reinstalling a stock rooted rom.
Sent from my T-Mobile G2 running Cyanogenmod.

... also try a diff SIM.
EDIT..... Which method did you use to root?

ddotpatel said:
... also try a diff SIM.
EDIT..... Which method did you use to root?
Click to expand...
Click to collapse
I used the thread "temp to permanent root, using rage instead of visionary"
Sent from my T-Mobile G2 using XDA App

Is it factory unlocked? Have you used an unlock code? Have you tried the full radio s off, super Cid thing?
Sent from my HTC Vision using XDA App

I wonder if your SIM card is faulty, needs cleaning, or is just a bit loose in the socket.

steviewevie said:
I wonder if your SIM card is faulty, needs cleaning, or is just a bit loose in the socket.
Click to expand...
Click to collapse
This is what it sounds most like to me. Also try to install another rom since you have it rooted now and see if that fixes the issue. Make sure you do a Nandroid backup first though!

ddotpatel said:
Is it factory unlocked? Have you used an unlock code? Have you tried the full radio s off, super Cid thing?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
I never put an unlock code and I'm still on tmobile. I called them and so far I haven't had trouble with signal as much but my number doesn't show up under status in about phone settings...it just says unknown. Its only on this phone though, my n1 shows my number with this sim.
Sent from my HTC Vision using XDA App

Just so we're clear.. Did this phone/sim combo work OK before your rooted the phone?

dadewy said:
Just so we're clear.. Did this phone/sim combo work OK before your rooted the phone?
Click to expand...
Click to collapse
No it wasn't. For the past couple of days since calling tmobile, its been significantly better but today I did randomly have that same problem of no connection, but mostly right now my problem is my g2 not being able to read my phone number in "status" under "about phone" settings but it does on my n1. When I called tmobile they tried sending my number ota 3 times with no luck...
Sent from my HTC Vision using XDA App

During the first 30 days you can go to a TMO store and get a new phone, pretty much "no questions asked". I'd go ahead and do that if I was you. Oh, go to a corporate store though, not a mall kiosk.
While you're there, get a new SIM, too. All free of charge.
If you still have the same problem after that, I'd try an exorcist

Is this problem solved now ? I got the same problem but have no chance to return it back.
If there is the way to solve it, could you please inform and share
Thx

hersam said:
Is this problem solved now ? I got the same problem but have no chance to return it back.
If there is the way to solve it, could you please inform and share
Thx
Click to expand...
Click to collapse
My signal problems seemed to be resolved, at least for the past week. It was resolved by calling tmobile customer support and they did some tests. However, my phone not recognizing my phone number under settings> about phone> status, is still a problem. Even tried getting a new sim and still didn't solve the problem. Did numerous OTAs with tmobile that didn't work. My number still shows up on caller id and stuff its just that menu thing. Sounds insignificant but some apps use that to determine your phone number. Also, when putting my sim back into my nexus one, it does show my number...
Sent from my HTC Vision using XDA App

Nevermind, my other problem was just resolved after reading a post in the cm6.1.1 thread. Settings-call settings-additional settings-my phone number.
Sent from my HTC Vision using XDA App

Help! No Network after Sim Unlock!

Help!
I'm an experienced use, but am totally lost here.
I got the SIM unlock code from Tmobile yesterday, threw in an ATT sim, unlocked it, no problem.
I thought it was working fine yesterday
Then when I woke up this morning, i have no network at all! Just the circle with a line through it.
Anyone have any thoughts/guesses/help? I don't know what to do!

did you try rebooting the phone?
is your IMEI black listed?

AllGamer said:
did you try rebooting the phone?
is your IMEI black listed?
Click to expand...
Click to collapse
it's not blacklisted, it was working perfectly...tried rebooting, tried a nandroid restore, tried a different rom...

AllGamer said:
did you try rebooting the phone?
is your IMEI black listed?
Click to expand...
Click to collapse
did you get it fix?
I got same problem.

no fix..... when did your problem start??? what happened when it happened???

bongostl said:
it's not blacklisted, it was working perfectly...tried rebooting, tried a nandroid restore, tried a different rom...
Click to expand...
Click to collapse
easy test
if you still have any old phone in the house, or borrow a phone from a friend/co worker for a few minutes
just to swap the SIM card and try, then you can quickly figure out if it's an issue with the phone or the SIM
SIM unlocking a phone will not cause the network problem, unless the IMEI is black listed
is the phone able to find any network?
also you can use Odin to flash back to factory stock

AllGamer said:
easy test
if you still have any old phone in the house, or borrow a phone from a friend/co worker for a few minutes
just to swap the SIM card and try, then you can quickly figure out if it's an issue with the phone or the SIM
SIM unlocking a phone will not cause the network problem, unless the IMEI is black listed
is the phone able to find any network?
also you can use Odin to flash back to factory stock
Click to expand...
Click to collapse
at least i dont think its blacklisted....i bought it from a guy on craigslis.
but it worked fine for weeks.
why would this cause a problem?
i called tmobile and they didnt say anything,,,,

Go in to network settings and check network operators. If your phone sees T-Mobile/ATT but you cant connect then that means your phone was blacklisted for either being lost or stolen.

Monk4Life said:
Go in to network settings and check network operators. If your phone sees T-Mobile/ATT but you cant connect then that means your phone was blacklisted for either being lost or stolen.
Click to expand...
Click to collapse
when i type 'search now' it doesn't find ANYTHING.
it stays on 'searching' for a while', doesn't select anything
then it comes back showing tmobile and att.
when i select tmobile (or att) it says, "your sim card does not allow a connection to this network"
If the phone was blacklisted, why would tmobile not say anything to me (and why would it only stop working now?)

Try odining back to stock kl1. That will reflash the radio and maybe fix it
Sent from my SGH-T989 using XDA App

shehrammajid said:
Try odining back to stock kl1. That will reflash the radio and maybe fix it
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
I can't find the odin of kl1----have a link by chance?

bongostl said:
I can't find the odin of kl1----have a link by chance?
Click to expand...
Click to collapse
Here you go,
i used it to odin back to stock to return mine back to tmobile.
http://forum.xda-developers.com/showthread.php?t=1391174

sic_lic1o1 said:
Here you go,
i used it to odin back to stock to return mine back to tmobile.
http://forum.xda-developers.com/showthread.php?t=1391174
Click to expand...
Click to collapse
no go---doesn't make a difference!
I've been on with (incompetent) people on tmobile for half an hour now...

I would check sim card mine went bad after I took it out of my phone then stuck it in my pocket for a half hour or so when I tried using it it said same thing about connecting to network so I tried my sim in another phone and it didn't work. Use my friends sim and my phone found connection in a few seconds
Sent from my SGH-T989 using xda premium

That's exactly why i suggested him to try his SIM card on another phone
it could just be his SIM that is toasted

change the APN settings. there are a few out there that will work but to keep it simple..
go to:
Settings>Wireless and network>Mobile networks>Access Point Names
press the menu button and go to New APN
for the name put "ATT" and for APN type "phone"
leave everything else blank

SevenSe7enSeven said:
change the APN settings. there are a few out there that will work but to keep it simple..
go to:
Settings>Wireless and network>Mobile networks>Access Point Names
press the menu button and go to New APN
for the name put "ATT" and for APN type "phone"
leave everything else blank
Click to expand...
Click to collapse
nothing worked...tried my wife's sim in my phone, no go.
not a blacklisted phone (according to tmobile).
Since I bought it on craigslist, they wouldn't let me send it back...until I said those three magic words (cancel my account).
They are sending me a replacement---replacement fee is being waved.
Thank you magenta!

U should've tried flashing a different modem
Sent from my SGH-T989 using Tapatalk

minhajmsd said:
U should've tried flashing a different modem
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
I did.
I now believe that this is probably related to the same bug that is causing people to lose their ISDN and have the same loss of radio connection.
see: http://forum.xda-developers.com/showthread.php?t=1474504 for one example (lots of others if you look)

Hello. FWIW: Not quite the same problem, but the fix for me might work for you by chance.
When I got my unlock code from T-Mobile then applied it, my phone did register with the T-Mobile network, but it could not receive phone calls.
Using her phone, my girlfriend was kind enough to help me test various scenarios: phone calls in, out; sms in, out; GSM or Wi-Fi; etc. We narrowed it down to no calls in on GSM at least.
Like you I tried rebooting, but I did not get as far as re-flashing, etc. What I did try on a hunch was clearing all user and system apps' cache with Titanium Backup. Voilà! It worked.
I hope that helps you with your phone (assuming you use Titanium Backup.)

[Q] S3 on Bell: not registered on network

hi everyone,
I got my S3 from Bell two weeks ago, it worked fine most of the time including calls, sms and data.
but occasionally for whatever reason the phone cannot make call or send sms, no ring for incoming call also. it shows "not registered on network" when I try to dial. at the time showing this error, there was signal on the bar.
maybe after long time, it can registered itself into network again, but most of the time, I just restart the phone and it works fine again.
I called Bell and they asked me to replace the SIM card, so I did, but I still see this error. So I think it is not SIM issue.
anyone has idea what the cause could be? or is there anyway to fix it?
I tried to search online before I ask, just couldn't find a solution so far.
so post here and hope anyone can help,
thanks for the help in advance.

I've had this issue as well.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

I had this problems with rogers as well. Same as you I contacted rogers they told me to remove the sim and replace it. Worked for a while but kept happening. I got fed up and rooted then installed kyan rom and haven't had the problem since. Not sure if it was rom based or if the factory reset before flashing resolved the issue but haven't had it since. Hope someone figures this out though because it's annoying especially on a new phone that is stock.
Sent from my SGH-I747M using Tapatalk 2

Good to hear you had fixed it.
I might try factory reset to see what happen.
healer82 said:
I had this problems with rogers as well. Same as you I contacted rogers they told me to remove the sim and replace it. Worked for a while but kept happening. I got fed up and rooted then installed kyan rom and haven't had the problem since. Not sure if it was rom based or if the factory reset before flashing resolved the issue but haven't had it since. Hope someone figures this out though because it's annoying especially on a new phone that is stock.
Sent from my SGH-I747M using Tapatalk 2
Click to expand...
Click to collapse

Had this problem on bell a few times the first 2 weeks I had my phone. Went to the bell store and without hesitation they told me to change the mobile network mode from gsm/hspa+/lte
To just gsm/hspa+.
Reason given was the Lte network where I was using my phone (west island, montreal) wasn't strong enough. So my phone would switch between networks until eventually it got in that state. Personnaly I think the problem was more signal penetration into the computer lab I work in.
It's been 2 weeks stable so far. A co-worker reported the same problem to me last week and he took my advice and hasn't had the problem since.
Sent from my SGH-I747M using xda app-developers app

Thank you very much for the tip. I was wondering that too, because I noticed that the network icon at top bar keep changing between H+ and LTE by itself. and I wonder why too.
I will try and see what happened.
thanks
uglyren said:
Had this problem on bell a few times the first 2 weeks I had my phone. Went to the bell store and without hesitation they told me to change the mobile network mode from gsm/hspa+/lte
To just gsm/hspa+.
Reason given was the Lte network where I was using my phone (west island, montreal) wasn't strong enough. So my phone would switch between networks until eventually it got in that state. Personnaly I think the problem was more signal penetration into the computer lab I work in.
It's been 2 weeks stable so far. A co-worker reported the same problem to me last week and he took my advice and hasn't had the problem since.
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse

SAMSUNG i747M not registered on network
I had this samsung s3 i747M from canada. Got it unlocked here in Pakistan. Placed a local sim in it. It recognizes the sim, registers it, makes calls, but then after a while, it shows "not registered on network". i restart, it registers network again, then loses it again. It keeps doing it. sometimes it is registered on network, but can't make or receive calls.
I have tried a number of things but the problem is not resolved and i'm fed up to the point that i want to throw this phone away.
The original rom had android 4.3
here's the list of things i have tried.
* changed the network mode to "GSM only" and "WCDMA/GSM (auto connect)" - NO USE
* Factory data reset a few times - NO USE
* tried a custom rom (it was so bad, i deleted it, don't even remember the name) - NO USE
* stock rom 4.4.2 from "sammobile.com" - NO USE
* tried flashing different modems from "http://forum.xda-developers.com/showthread.php?t=1831898" - NO USE
* tried changing the options from *#2263# to my network's specifications - NO USE
* tried sims from different networks - NO USE
PLEASE IF SOMEONE CAN HELP ME OUT HERE, I'M DESPERATE

@qamar_ish, what ROM is on your Samsung phone?

Originally it came with android 4.3. Currently it has this kitkat rom, which i downloaded from "sammobile.com".
the filename is this:
I747MVLUFNK2_I747MOYCFNK2_I747MVLUFNK2_HOME.tar.md5
It said on the webpage that it is the stock rom for SGH-i747M
audit13 said:
@qamar_ish, what ROM is on your Samsung phone?
Click to expand...
Click to collapse

Maybe flash the latest 4.4.2 ROM?

Thats what it is. it is the 4.4.2 rom, but the problem persists.
audit13 said:
Maybe flash the latest 4.4.2 ROM?
Click to expand...
Click to collapse

Does your carrier require an AWS-compatible phone? Does the i747m support all frequencies provided by your provider?

I'm not sure about whether an AWS phone is required or not. But it certainly supports all the frequencies provided by the networks here. I checked it by using the code *#2263# and the options have the frequency supported by my networks here, that is "ufone" and "warid"
PS. I'm not an expert on this thing, whatever i'm doing, i learnt it during the last week..
audit13 said:
Does your carrier require an AWS-compatible phone? Does the i747m support all frequencies provided by your provider?
Click to expand...
Click to collapse

It looks like your phone does support your carrier's frequencies.
Does your phone show the imei# from the dialpad? Is it possible there is something wrong with the phone's imei #?

It does show the correct imei when i dial *#06#. It had lost its imei initially when i got it unlocked, but got it fixed from someone.

qamar_ish said:
It does show the correct imei when i dial *#06#. It had lost its imei initially when i got it unlocked, but got it fixed from someone.
Click to expand...
Click to collapse
Do you know why it lost the imei during the unlock process? Does the imei # in the phone match the imei # on the label under the battery?

I dont know how it lost imei. The guy who fixed it said that the imei is corrupted and he fixed it. Now it shows the same imei as on the back of the device.

I have never had a Samsung phone lose the imei if the phone was unlocked using a code, assuming that is how your phone was unlocked.
Did you try re-injecting the imei with the efs folder? It can be done using nvwriter.

Ok. I will try that. Can u guide me how to do it? Or share a link or something.
And thanx for helping me out here man..

Link: http://forum.xda-developers.com/showthread.php?t=1804117

[Q] Need Help - Mobile Network Not Available

Hi Guys,
I will try to make this as short as possible. I have a T-Mobile Galaxy S3 that was rooted and running the liquid smooth rom and activated on Simple Mobile. It worked great for a little over two weeks, but when my wife went to use the phone this morning it would say "Not registered on network" when she tried to make a call. I thought this may be a carrier issue so I contacted Simple Mobile. I started looking up this issue online and found that many people were in the same boat if they had either lost their IMEI or had a blocked IMEI. I got a little worried since I purchased the phone on Craigslist so I called T-Mobile. They confirmed that the IMEI is clean and can be activated. I decided to unroot the phone and return to stock. I used ODIN to flash firmware build IMM76D.T999UVALEM. Initially it got stuck on the boot screen so I did a factory data wipe and all was okay. I also reset the binary flash counter prior to reloading the stock firmware. When all was said and done the phone booted back up and the device status was back to normal and all seemed right in the world except there was still no voice or data. I thought maybe Simple Mobile just sucks so I went to a T-Mobile store and activated the phone on a prepaid plan with unlimited data. The device powered up and immediately sent a voicemail notification, but did not activate. Under status I have Network: Unknown, Mobile Network Type: Unknown, Service State: Out of Service, My Phone Number: Unknown, ERI Version: Unknown. The IMEI is there and correct.
At this point I have taken this to the edge of my ability and I could really use some advice. I fear that this may be an issue with the device and if so I do not know what recourse I have to get it fixed under warranty since I bought it used. At this point I will try anything and all suggestions/help will be greatly appreciated!

Check your apn settings. Go to settings -> more settings -> mobile networks -> access point names. If you're still on t-mobile then press menu button and select reset to default. If you're on someting else find apn settings for your network and copy them in the right places. Besides that and hardware problem I don't see any other reason, but I'm not an expert on that and I think there are people who will have some ideas on how to fix it.
Good luck
Sent from my SGH-T999 using xda app-developers app

Hi Hajme,
Thanks for the reply. I forgot to mention above, but I did verify the APN settings and everything looked good. The odd thing is that even if the APN was whack, I should still be getting voice. I contacted Samsung and luckily they are going to take it in on a warranty claim, so hopefully they can work it out.

I have the exact same problem but for verizon. If anybody knows a way to fix it please let me know. Thanks.

T-mobile Samsung Galaxy S3 - Searching loop problem for Mobile Network
I am having the same problem this morning! I have unlocked the tmobile sgs3 and i have been using the phone for the past three months using another carrier sim. I searched all the forums and couldn't fine a solution for it! There was no problem with the carrier sim, cos I tried it on my other phones and it worked fine. I have flashed cm10.1 nightly build , aokp , stock ics rom and stock jelly bean, still having the same issue... I have even reseted the binary counter, still no use ! I went into service mode using *#197328640#, found that the carrier name was "unknown". There was no no problem with the antenna, I could still receive other carrier signals . The thing is it does not register , It keeps on going in a search loop! The product was purchased from T-Mobile and is unlocked! What should I do?

ramkumar19890 said:
I am having the same problem this morning! I have unlocked the tmobile sgs3 and i have been using the phone for the past three months using another carrier sim. I searched all the forums and couldn't fine a solution for it! There was no problem with the carrier sim, cos I tried it on my other phones and it worked fine. I have flashed cm10.1 nightly build , aokp , stock ics rom and stock jelly bean, still having the same issue... I have even reseted the binary counter, still no use ! I went into service mode using *#197328640#, found that the carrier name was "unknown". There was no no problem with the antenna, I could still receive other carrier signals . The thing is it does not register , It keeps on going in a search loop! The product was purchased from T-Mobile and is unlocked! What should I do?
Click to expand...
Click to collapse
I'm having the same issue after unlocking my GS3 T-999.

Have you tried using the data restore app by peoplsarmy
Sent from my SGH-T999 using xda premium

Vodafone India
May I know which "data restore app" , you are referring to?

Help: My Galaxy S4 M919 wont make or take any calls!

Hello fellow forum readers, im in dire need of some of your expert advice. I recently bought a Galaxy S4 from Ebay, the M919 model from tmobile. Today I received that phone, and proceeded to do the unlock guide fond here on the forum, it was succesful. I put my sim card in (im overseas, so its an international simcard) and the phone recognized my sims network. Well, next I tried making a phone call and thats where I found the problem, the phone simply wont make or receive a call. It tries to, but it hangs up. Sms also doesnt work. Wifi is fine. Everything else is fine. The phone is baseband version VUAMDL. I already flashed the same modem with odin to no avail. Does anyone have a suggetion of what to try next? Thanks a lot!

I just tried my data connection and its working fine! its only the calls! pls help!

re: calls
ferrojasaguilar said:
Hello fellow forum readers, im in dire need of some of your expert advice. I recently bought a Galaxy S4 from Ebay, the M919 model from tmobile. Today I received that phone, and proceeded to do the unlock guide fond here on the forum, it was succesful. I put my sim card in (im overseas, so its an international simcard) and the phone recognized my sims network. Well, next I tried making a phone call and thats where I found the problem, the phone simply wont make or receive a call. It tries to, but it hangs up. Sms also doesnt work. Wifi is fine. Everything else is fine. The phone is baseband version VUAMDL. I already flashed the same modem with odin to no avail. Does anyone have a suggetion of what to try next? Thanks a lot!
Click to expand...
Click to collapse
You need to flash the stock M919 Tmobile Samsung Galaxy S4 4.2.2 Odin flash firmware.
Here is the link to the official m919 firmware: http://www.hotfile.com/dl/213469534/9ff06bd/M919UVUAMDL_M919TMBAMDL_TMB.zip.html
After flashing all should be good!
Good luck!

Thanks Misterjunky! gonna try that as soon as I get home and let you know my results! :good:

Unfortunately no go.... I flashed the firmware with odin, everything is fine with the ezception of phone calls... pls help!
Sent from my LG-E970 using Tapatalk 4

I'd take the battery, sim card, and SD card out for 30 minutes, then put everything back in and boot up.
Sent from my SGH-M919 using xda app-developers app

Android_Monsters said:
I'd take the battery, sim card, and SD card out for 30 minutes, then put everything back in and boot up.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
thanks, tried that and still no go... :crying:

Well hate to say it. I think you got ripped of
Sent from my SGH-I337M using xda app-developers app

I have the same issue, mine is the wind m919v version. after two days of loading software and custom roms and fashing radios I got no service but had 4g and data working. I ordered an unlock code from a site and successfully unlocked it and it worked all last night perfectly with calls and txt. (weird cause its a wind phone and im on wind) Today Iwoke up to data working and emergency calls only again. I checked with another sim and the phone was carrier locked again. only this time putting in the unlock code didn't fix it. It unlocked it again but no service for calls or txt. so the phone can work it has to be something screwing up. so frustrating

damannn said:
I have the same issue, mine is the wind m919v version. after two days of loading software and custom roms and fashing radios I got no service but had 4g and data working. I ordered an unlock code from a site and successfully unlocked it and it worked all last night perfectly with calls and txt. (weird cause its a wind phone and im on wind) Today Iwoke up to data working and emergency calls only again. I checked with another sim and the phone was carrier locked again. only this time putting in the unlock code didn't fix it. It unlocked it again but no service for calls or txt. so the phone can work it has to be something screwing up. so frustrating
Click to expand...
Click to collapse
Flashing radios on the s4 messed up my service, only fix was Odin to stock. I do not mess with radios anymore
Sent from my SGH-M919 using xda app-developers app