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] [SOLVED (sorta)] Sgs3 i747m Service issues

First of all this is my first time posting here on xda but have read a lot of things on this website, and i apologize if i have placed this in the wrong area.
I have seen other threads about this issue but none seem to be quite like mine.
So i had cyanogenmod on my galaxy s 3 att/rogers, I had it on my phone for a long time pretty much the entire year i have had the phone, when randomly last night my service just stopped. I cant make phone calls, text, or use data. But my wifi still works. so basically my phone turned into a tablet.
Things I have tried to fix this:
1: restored using nanndroid backup (no effect)
2: flash a different rom "PAC Rom" with its kernel (no effect)
3: Restored phone to complete factory defaults using odin (no effect)
4: Tried different SIM card in my phone to see if it would work (no effect)
5: Tried my SIM in different phones (worked)
6: Restored phone to factory default using samsung kies (no effect)
So can you see my delema? No matter what i try the service just will not activate and only says "rogers emergency calls only". this phone is only around a year old.. This isn't a common thing to happen is it?
Anyways I would be very, very happy if anyone could help me fix this problem. I apologize if i get back to you slow as i have to go to work in a couple minutes, my boss is probably going to be pissed I have no phone. :crying:

Nothing? Nothing at all?

I had similar issue I just solved. I had only lost data however. I would suggest maybe checking your apn settings. It maybe flash a modem. I was able to make calls/texts no problem but no data at all. I Google the apn settings and now everything works great
Sent from my SGH-I747 using xda app-developers app

Did you check if your IMEI is still intact?
Your issue sounds very similar to those who have lost their IMEI.
Sent from my SAMSUNG-SGH-I747M using XDA Premium 4 mobile app

musical utamag
Apn settings were all right. Not sure what has happened.. rogers told me the phone was toast but I have a hard time beleiving that from someone who looks at my phone for 30 seconds and says that. Either way I'm picking my note 3 up friday. Not through rogers, since they were a royal pain in my wallet. Bell ftw
Not really sure if I should mark this as solved due to the fact its not?

[Q] Help with Verizon SCH-I535 Phone to use on T-mobile

Hey everyone and thanks for taking the time to read this,
So the story goes as so: After doing some research couple months ago about the capability of the Verizon Galaxy S3 to work on T-mobile, i purchased it, and got it to successfully work on T-mobile(texts, calls, wi-fi). The problem is, i just recently upgraded to include a data plan, and i cannot access the internet, despite taking my phone to my cell phone dealer and contacting T-mobile.T-mobile even sent me a guide to do a mastery reset to factory in hopes to solve this problem, only to tell me afterwards that the phone version SCH-I535 is a "verizon locked-software" and i won't be able to set up an APN to work on the T-mobile network. This was all due to the fact that i was not able to set up a APN for T-mobile, and every time i tried to access it through setting, it brought me to a blank black page with the only option of "Reset to Default". After reading other forums and talking with some people, many have suggested i take this issue to XDA to find a solution.
So, here i am.....Does anyone know if it is possible for me to break/root/ or whatever it is called so i can successfully access the t-mobile network on my phone? Preferably an easier guide since i am sort of a newbie at this sort of stuff.
Thanks again for reading.

Before your Contract change, you were able to receive and make calls successfully with T-Mo Sim right ? Even now you can make calls too correct ? The reason I am asking this is to be able to check if you are really unlocked off of VZW. If you are not unlocked, then that would be the first step.
You are right, the APNs do drive Data Connection. If the stock firmware does not allow you to change APNs then you will have to root. Please post a screen of your Settings > About phone that shows your Rom Version, Baseband and Kernel.

Perseus71 said:
Before your Contract change, you were able to receive and make calls successfully with T-Mo Sim right ? Even now you can make calls too correct ? The reason I am asking this is to be able to check if you are really unlocked off of VZW. If you are not unlocked, then that would be the first step.
You are right, the APNs do drive Data Connection. If the stock firmware does not allow you to change APNs then you will have to root. Please post a screen of your Settings > About phone that shows your Rom Version, Baseband and Kernel.
Click to expand...
Click to collapse
Hey Perseus, thanks a lot for taking the time to reply. I bought the phone in the summer off someone who had verizon. I have always had T-mobile, and considering this phone is GSM, i decided to buy it because it would probably work for T-mobile. I had the phone unlocked, and i am currently using it to make calls, texts, and even use wi-fi with no problem. The only problem at this time is that i recently added a data plan which i cannot currently use. Here is a screen shot of what you have requested.
Thanks again

First try
Settings > More > Mobile Networks > Preferred Network Type.See what it is set to. Change it to LTE/GSM/WCDMA if needed. See the other option System Select as well.
Also separately try the following.
Hit ##DATA# in the Dialer. In the subsequent Menu choose EDIT > OTHERS > LTE APN
If all fails, please Root the phone and then try. The way you go about is
1. Flash a Custom Recovery via Odin. Make sure the version of Custom recovery is for your model D2VZW not D2TMO.
2. Flash a SuperSU zip file via Recovery and then hit fix permissions in the recovery.
Try the APN Settings after that. IF you can actually access them, then set them according to this link.
If all the above fails, I'd suggest a custom Rom for d2VZW.

You will never get 4g trust me I had one... you will just get the E
Sent from my SGH-T999L using xda app-developers app

Ok, so i tried to changed it to LTE and i got no service at all, so i switched it back to Global. I also tried the dialer thing several times, and got the " connection problem or invalid MMI code"
So i guess i am going to have to root the phone? Does anyone know a good video tutorial or written tutorial on how to safely do this? Also, what exactly is rooting?

HackThisThing said:
Ok, so i tried to changed it to LTE and i got no service at all, so i switched it back to Global. I also tried the dialer thing several times, and got the " connection problem or invalid MMI code"
So i guess i am going to have to root the phone? Does anyone know a good video tutorial or written tutorial on how to safely do this? Also, what exactly is rooting?
Click to expand...
Click to collapse
You have to enable the mmi codes to use them. Anyway as stated above your reply you will never get 3g or 4g just edge (seen it personally) which is pretty darn slow.. Not worth it if you ask me and be paying for data.. If you still want to root it and keep trying to add sons check the Verizon forums.. They could probably help you a lot more than on this side of the forums
Sent from my SGH-M919 using Tapatalk

Guys, he is not getting ANY data signal at all. His problem isn't getting the specific icon but being not able to change APNs.
@HackThisThing, you are better off following up on Verizon Device forum. That forum does have a video tutorial for Rooting. Here's forum link.
I don't think you will be able to change APNs without rooting. I checked with a buddy of mine who has the same device as you.
Here's a good answer to What is Rooting ?

Even if you CAN fix it, why bother if you can only get 2G? I'd sell it or trade it for a phone that's more compatible with T-Mobile 's network instead of paying for data and only getting dial-up speeds. I get that solving problems is fun, but OP do you want to live with only 2G?
Sent from my SGH-T999 using Tapatalk

I don't agree with that assessment. Just like the T999L phone, this device will work on LTE Bands just fine. OP just needs to wait for LTE to be rolled out in their area. There's a coverage map and roll out schedule on T-Mo website and the T-Mo News blog.

It's worth a look, but could still leave them with patchy coverage. If it's going to be a while, why wait when it's not hard to just trade the phone? I guess I don't see a reason why hold out on getting a Verizon phone to work when you could just get one that works now with little to no monetary loss. It's just a Verizon S3, not really something worth "waiting" for when they could get the same thing but more functional on their network of choice.
They made an honest mistake and waiting might give them "good enough" service - but other than that they're stuck with dial up speed only and risk bricking a phone they could just trade or sell now.
Maybe I'm just impatient and risk averse.
Sent from my SGH-T999 using Tapatalk

OP has already purchased this VZW version.

Same Problem...
I have the same problem....
How to get any type of data...?