Develop Bugs

[Q] HELP! GS not conneting to network

I flashed JG5 using Odin (removed sim and sd card) after that i did the modaco r3. Now it does not connect to the mobile network. PLEASE HELP

Did you flash all three files (pda,phone and csc)?
Also, are you talking about mobile network for calls/texts or data only?

Thank you for responding.
Yes i flashed all together.
My Calls / Text is not working...the status bar does not show the connection.
I thought the problem was with the task killer hence that too has been un installed.
I did notice that when i switched sim cards and restarted the network came on but the phone would restart and the network would disappear.

did you install the apn files for your phone .most of the time you find a list at the provider .you can go to apps settings wireless internet mobile networks names and intrance points tip at tapp and tip on new apn .but first find your providers list .if you google apn list ore so you can find it also

wheelboy said:
did you install the apn files for your phone .most of the time you find a list at the provider .you can go to apps settings wireless internet mobile networks names and intrance points tip at tapp and tip on new apn .but first find your providers list .if you google apn list ore so you can find it also
Click to expand...
Click to collapse
Thanks for the reply. Isnt APN used primarily to connect to EDGE / GPRS. Is it required for registering on a mobile network because as of now the phone is not registering on the mobile network.

Need help urgently...hence bumping

Set up your apn again. Trust me
Sent from my GT-I9000 using Tapatalk

APN---Done that it did not help.
Sometimes i get the signal strength bars but when i dial a number it does not connect it just says Dialing.
This is getting very frustrating.
should i try to flash another firmware...if so please point me to a mirror site as the samsung firmware site is down since the past few days.

Yes, you probably should try a different firmware. Try JM2 from my mirror. (see signature, download is fastest if you run wuala. direct http downloads may be slow at times)

Darkstriker said:
Yes, you probably should try a different firmware. Try JM2 from my mirror. (see signature, download is fastest if you run wuala. direct http downloads may be slow at times)
Click to expand...
Click to collapse
Thanks for the reply...Downloading JM2 in progress from your site.
One doubt...are firmwares region specific or anything goes ??
Once i flash i will update this post and i pray that it works

The content of the f/ws is region specific (additional languages and apps that only work in some countries). However, they all work on the your device!

Darkstriker said:
The content of the f/ws is region specific (additional languages and apps that only work in some countries). However, they all work on the your device!
Click to expand...
Click to collapse
Flashed JM2...same problem HELP!!

Should i format my internal if that is what is causing the problem...because i am not able to figure out the exact problem.

I have the same problem. I bought my GS from USA and I try to use it in Europe. I flashed it both European and America firmwares but I couldn't solve the problem.
When I press *#1234#, it shows that "Phone: Unknown" and *#06# responses nothing.

When i insert the sim card of another operator the phone works. My original operators sim works on other mobiles except this galaxy s. Any tips on why or how to check.

I'm having the same problem, any help to fix this would me really great!

It seems that the galaxy s is not connecting on 1800mhz after flashing. It connects on networks using 900 mhz. Any way to check this on the phone

This is weird. I tried using the phone from another location and it worked. I think this has to do something with the cell tower near my home location.

Hi guys,
I was able to re-flash the original firmware and all works again. If you guys want to go that way here is the link http://forum.xda-developers.com/showthread.php?t=734475 I think this is just for the Vibrant but I'm sure you can find the other firmware on the forums.

Impossible to get network operator

I flashed CM10.1 on my S3 and had the same problem as others where data was intermittent. It worked for some time and after one nightly, I lost my IMEI. So I got back to stock, used the procedure with QPST and got back my IMEI. I got back to cm10.1 and unsurprisingly, I had a hard time having data. But worst off, I had a hard time having cell connection anymore, not even voice or sms. Tried AOKP without any luck. Tried different modems, not luck either. Now I went back to stock and still doesn't work. There's something that is not resetted between flash of ROM that keeps messing up my connection. I also found out that only one network provider is ever found, one is Rogers Wireless (I'm with Bell), or one is EXT. But never any other provider is ever found. And also in *#*#4636#*#* under phone info I can'T change the radio band like I can on the phone of my girlfriend.
So there it is. I'm stuck. I don't really want to buy another phone. It is a software issue for sure. But how can we solve that? Is there any way to restore the EFS to factory default? Could it be buried there? What is the ERI? Could it be that? My stock ROm says that it can't get the ERI version.
Any help is welcome.

my stock telus ERI is unavailable but i think thats normal... i have no problems
from what i understand imei and apn settings are the things to check into

24680 said:
my stock telus ERI is unavailable but i think thats normal... i have no problems
from what i understand imei and apn settings are the things to check into
Click to expand...
Click to collapse
IMEI and APN are good. IMEI will get me data, but I can't even get a cell connection now. No radio at all.

whats your radio band set to?
if i set mine to anything but automatic it wont find networks like yours..
*#*#4636#*#* dont work on my telus s3.
i use a different method
*#197328460# then
UMTS > Debug Screen > Phone control > Network Control > Band selection >
Automatic...
beware what you change in here as there is no return to default

24680 said:
whats your radio band set to?
if i set mine to anything but automatic it wont find networks like yours..
*#*#4636#*#* dont work on my telus s3.
i use a different method
*#197328460# then
UMTS > Debug Screen > Phone control > Network Control > Band selection >
Automatic...
beware what you change in here as there is no return to default
Click to expand...
Click to collapse
Neither of the two works. *#*#4636#*#* was working with CM10/10.1 and AOKP. But not with stock. And the one you suggest after is not working either.
But I remember going ot *#*#4636#*#* before flashing stock rom and I wasn't able to selet any band. On my girlfriend's android phone (HTC) I can.

if it were me.. i would try reflashing stock again... after flashing stock do a factory reset thru recovery... seems to help for clean stock setup.
if still no network i would check that band selection is set to automatic.
maybe someone else with more experience would have a better idea.
you mentioned you changed your band selection and now cant change it back.
i dont think flashing stock changes this.
i think that might be your problem.
ifso you first need to fix phone to use *# code... i have no idea why its not working
it works on my stock telus 4.0.4 and 4.1.1
maybe bell blocks from using *#code?

ebfortin said:
I flashed CM10.1 on my S3 and had the same problem as others where data was intermittent. It worked for some time and after one nightly, I lost my IMEI. So I got back to stock, used the procedure with QPST and got back my IMEI. I got back to cm10.1 and unsurprisingly, I had a hard time having data. But worst off, I had a hard time having cell connection anymore, not even voice or sms. Tried AOKP without any luck. Tried different modems, not luck either. Now I went back to stock and still doesn't work. There's something that is not resetted between flash of ROM that keeps messing up my connection. I also found out that only one network provider is ever found, one is Rogers Wireless (I'm with Bell), or one is EXT. But never any other provider is ever found. And also in *#*#4636#*#* under phone info I can'T change the radio band like I can on the phone of my girlfriend.
So there it is. I'm stuck. I don't really want to buy another phone. It is a software issue for sure. But how can we solve that? Is there any way to restore the EFS to factory default? Could it be buried there? What is the ERI? Could it be that? My stock ROm says that it can't get the ERI version.
Any help is welcome.
Click to expand...
Click to collapse
if i were u i would first try your girls sim in your phone and vise versa and if no luck do the qpst instructions to regain LTE not imei .and if u still cant manually find network operator after that i would format both sd cards and odin back to stock rooted and do the imei injection again for the hell of it and the LTE fix ..and stay on stock rooted or 4.1.2 until u get this figured out cause 4.2 builds are gonna have more probs then 4.1...I know u are having cell connect probs and these instructions are for imei and data but it sounds like your out of options....i lost imei once and had to manually inject with qpst and my reception was one bar til i did the LTE fix and it worked awesome..one more thing is my phone will not select a radio band ever unless i manually select my network operator first or i have no sim card in phone..i have also had sim cards crap out for no apparent reason..good luck
edit. my bad i thought your girl also had gs3..maybe the sims are still the same

stuey25 said:
if i were u i would first try your girls sim in your phone and vise versa and if no luck do the qpst instructions to regain LTE not imei .and if u still cant manually find network operator after that i would format both sd cards and odin back to stock rooted and do the imei injection again for the hell of it and the LTE fix ..and stay on stock rooted or 4.1.2 until u get this figured out cause 4.2 builds are gonna have more probs then 4.1...I know u are having cell connect probs and these instructions are for imei and data but it sounds like your out of options....i lost imei once and had to manually inject with qpst and my reception was one bar til i did the LTE fix and it worked awesome..one more thing is my phone will not select a radio band ever unless i manually select my network operator first or i have no sim card in phone..i have also had sim cards crap out for no apparent reason..good luck
edit. my bad i thought your girl also had gs3..maybe the sims are still the same
Click to expand...
Click to collapse
Thanks for your answer. Really appreciated. I've flashed so much time that I don't see the point of doing it again. I also had, at some point, to inject my IMEI and it worked with QPST.
What I find really strange is that a stock reflash doesn't put everything back to when I bought the phone. Funny thing, after the flash, it knew what my Wi-Fi router password was! So obviously there are some part of the config that is not overwritten. Which I find odd.
I also started playing with the service menu and found a lot of settings for the radio band. No luck yet.

ebfortin said:
Thanks for your answer. Really appreciated. I've flashed so much time that I don't see the point of doing it again. I also had, at some point, to inject my IMEI and it worked with QPST.
What I find really strange is that a stock reflash doesn't put everything back to when I bought the phone. Funny thing, after the flash, it knew what my Wi-Fi router password was! So obviously there are some part of the config that is not overwritten. Which I find odd.
I also started playing with the service menu and found a lot of settings for the radio band. No luck yet.
Click to expand...
Click to collapse
Your WiFi password could have been restored by google just like it puts your contact info back.
If you are doing a Odin to stock that should wipe it clean.

stuey25 said:
if i were u i would first try your girls sim in your phone and vise versa and if no luck do the qpst instructions to regain LTE not imei .and if u still cant manually find network operator after that i would format both sd cards and odin back to stock rooted and do the imei injection again for the hell of it and the LTE fix ..and stay on stock rooted or 4.1.2 until u get this figured out cause 4.2 builds are gonna have more probs then 4.1...I know u are having cell connect probs and these instructions are for imei and data but it sounds like your out of options....i lost imei once and had to manually inject with qpst and my reception was one bar til i did the LTE fix and it worked awesome..one more thing is my phone will not select a radio band ever unless i manually select my network operator first or i have no sim card in phone..i have also had sim cards crap out for no apparent reason..good luck
edit. my bad i thought your girl also had gs3..maybe the sims are still the same
Click to expand...
Click to collapse
This thing is so strange. There's only one network that my phone can see now, and it is 302720. Bell is 302610. No other network is visible. And since I'm with Bell, then I can't connect to 302720. I'm in for emergency calls only. That's why I thought it may have to do with radio. But it seems Rogers (302720) and Bell use the same bands. A channel maybe? But this should be all automatic! It's a pretty stupid bug let me tell you!
Maybe a SIM card issue? That would be quite a coincidence that it happen exactly when I'm playing with ROMs...

RUNNERX said:
Your WiFi password could have been restored by google just like it puts your contact info back.
If you are doing a Odin to stock that should wipe it clean.
Click to expand...
Click to collapse
Ah that's a good possibility. I didn't know it was saving passwords as well.
So if it wipes clean, how come this bug stays? There is obviously something that is not wiped and overwritten or else it would work.

How can one tell if someone losses their IMEI number? Unable to make phone calls? No 4g/ lte?
Sent from my SGH-I747 using xda app-developers app

Deggy said:
How can one tell if someone losses their IMEI number? Unable to make phone calls? No 4g/ lte?
Sent from my SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
When you go to info about your phone, in status you usually have your IMEI number. It'll show 0 if it's corrupted. Or sometimes it's a generic IMEI dans is used when the real one is unknown. It's 049 something I think.
Without an IMEI number you can do phone call. But you'll never have a data connection.

[Q] APN Problems (CM10)

Hello lovely people,
[Sony Ericsson Xperia Arc, Unlocked BL, CM10, Australia, Optus 3G]
I've been stuck with this problem for a few days, I've been searching stuff everywhere and haven't found a solution. Just randomly I haven't got phone reception or anything and the APN list was empty. I've tried adding the Optus APNs but whenever I touch 'save' it just returns back to the empty APN list. Apparently this was a bug or something for Android 4.0+ So is there no way of adding new APNs?
I've also tried resetting back to the default APN list but it's still empty, and whenever I select the 'Optus 3G' network provider it appears to start "registering on YES OPTUS" but then says "Can't connect to this network now, try again later"
I swapped the Optus sim card with a Telstra sim card and then BOOM 3G reception and a list of APNs. I put the Optus sim card back, and then...nothing.
So anyone have a solution or any advice or something? I'll give you COOKIES!

I found this may help (I'm using the Optus apn settings and found that I have to put 029 for the MNC or the apn gets wiped. So it's not related to the age of the SIM. New ones don't work any better than the old, as far as the MNC value goes.)Note this is from somebody who had same problem as you dont know if it will work as I have a 3 sim worth a try.:fingers-crossed:

I had the same problem, this worked perfectly
http://forum.xda-developers.com/showpost.php?p=34406980&postcount=2

Sorry for the late reply, I haven't had internet access for the last few days.
I tried putting putting the MNC as 029, still no luck :/
And yes, I always click menu then save, but the APN list is still empty.
I have since unrooted my phone and relocked the bootloader and factory reset it back to Android 4.0 and it is still the same thing, although now the phone won't even recognize the SIM card!

OhNo7ate9 said:
Sorry for the late reply, I haven't had internet access for the last few days.
I tried putting putting the MNC as 029, still no luck :/
And yes, I always click menu then save, but the APN list is still empty.
I have since unrooted my phone and relocked the bootloader and factory reset it back to Android 4.0 and it is still the same thing, although now the phone won't even recognize the SIM card!
Click to expand...
Click to collapse
You tried flashing the stock firmware with flashtool?
Sent from my soon-to-be bricked Neo V

APN won't stick

I have unlocked s6 and APN won't stick. When put into network mode automatic I get to input APN and it works until I let phone turn off screen or I manually hit power button. When I get back into phone the APN setting I input, for t-mobile, are gone. There are Sprint APN listed but I can't choose nor add or delete any. If I choose LTE GSM auto prl through one of the service menu's I am able to again choose APN and input what I want but at sleep and rewake the phone goes back to not listing the APN and having greyed out sprint APN. Phone works but have data issues here and there and sometimes have to reboot to get lte to stick. Lock screen sometimes shows T-mobile as carrier but usually shows Sprint. I can still make calls and use LTE data on my t-mobile sim when it says Sprint as carrier but I think my data and mms issues would be fixed if I could get the dang APN to stick. Any ideas? Different rom? I'm on 5.1.1 OJ7

littlebeeper said:
I have unlocked s6 and APN won't stick. When put into network mode automatic I get to input APN and it works until I let phone turn off screen or I manually hit power button. When I get back into phone the APN setting I input, for t-mobile, are gone. There are Sprint APN listed but I can't choose nor add or delete any. If I choose LTE GSM auto prl through one of the service menu's I am able to again choose APN and input what I want but at sleep and rewake the phone goes back to not listing the APN and having greyed out sprint APN. Phone works but have data issues here and there and sometimes have to reboot to get lte to stick. Lock screen sometimes shows T-mobile as carrier but usually shows Sprint. I can still make calls and use LTE data on my t-mobile sim when it says Sprint as carrier but I think my data and mms issues would be fixed if I could get the dang APN to stick. Any ideas? Different rom? I'm on 5.1.1 OJ7
Click to expand...
Click to collapse
This is a really old thread, but since I've been struggling with this issue for several months, I think this is the place for a reply.
There are several problems with a "sprint" unlocked S6, but the most annoying (other than hands free activation) is the APN settings going back to default and being "locked" until you reboot the phone. When in this "locked" state - you will not be able to receive MMS messages.
I have found that deleting (or simply renaming) the customer.xml (/system/csc/customer.xml) stops the resetting of the APN - and interestingly opens up the additional configurations under Mobile Networks -> Network Mode to choose GSM/WCDMA/LTE.
After fixing this and fixing hands free activation (https://forum.xda-developers.com/sprint-galaxy-s6/help/hands-free-activation-t3199214) the phone now performs VERY well on T-Mobile, just like it belongs there

I just checked my device on 7.0 Nougat and I can't find that file (there is no folder in root>system called "csc"). Any idea how I can fix this?

Bageland2000 said:
I just checked my device on 7.0 Nougat and I can't find that file (there is no folder in root>system called "csc"). Any idea how I can fix this?
Click to expand...
Click to collapse
You may not be allowed to view certain system files for some reason. I believe you have to be rooted to delete them. You could also try the system update first if you are stock. But probably best bet either way would be to start with clean install of whatever ROM you use or the stock ROM from TWRP. I've been able to delete the files from skyhigh and Rick Wardenberg's ROM. GL!:good:
---------- Post added at 12:06 PM ---------- Previous post was at 12:04 PM ----------
Bageland2000 said:
I just checked my device on 7.0 Nougat and I can't find that file (there is no folder in root>system called "csc"). Any idea how I can fix this?
Click to expand...
Click to collapse
You may not be allowed to view certain system files for some reason. I believe you have to be rooted to delete them. You could also try the system update first if you are stock. But probably best bet either way would be to start with clean install of whatever ROM you use or the stock ROM from TWRP. I've been able to delete the files from skyhigh and Rick Wardenberg's ROM. GL!:good:
Edit: I recommend es root explorer to do the dirty work.

if it's not too late
First you need your msl code I can help if not.then use data daily code or an app idonee don't get a fake I found on code after you do that you just need to change mms and apn setting see screenshot.i have 920p on 7.0 stock rooted running on t-mobile lte get mms everything

i need help with getting my data back working on my verzion s8 its stock

i am having a problem with my data everything else work like mms texts calls and wifi calling but my s8plus is a verzion one before i updated its thur my surface pro 4 its its windows 10 everything up to date on but anyways ok let me explain this best i can i know a lot about phones I'm not noob to this but i cant get my data working i have verzion s8plus its stock and everything nothing has happened to it or been rooted but since its been updated to the December update that Samsung posted now my verzion s8plus turned into a tracfone s8 plus even has the build number NRD90M.G955USQS2BQL1 I think that's the verzion build number this is the service provider sw version its changed to SAOMC_SM-G955U_OYN_TFN_0149 9889194556524f534a TFN/TFN/VZW before its updated its was vzw/vzw/vzw but somehow Samsung put a new feature on the s8plus so when you have a new carrier sim in it don't matter what carrier you using i am using total wireless and i been using it since September of last year everything worked fine its even still had verzion boot logo and everything and when its updated its said new sim inserted so i hit ok so its rebooted and i notice that its changed the boot logo to tracfone wireless its changed everything all the verzion apps where gone off of it its had the verzion apps before and my data worked fine before bc Samsung ad all the carrier apns stored so whatever carrier you on its will have the apn there i liked that feature so you don't have to look it up online and enter it in but now its has the correct apn but my data aint working at all now i don't want to reset my phone to factory i tried everything in my power to enter another apn and its wont even let me change or add one or delete it if anybody can help me in anyway i would thank you a lot but i cant change roms either i cant even load the unlocked firmware to my phone either i tried before and its failed everytime so if you think i can change roms i cant because i cant get it to work so any help best way to contact me is on my email it is [email protected] so contact me on that or if anybody can help me change roms i would like to but i reallt don't want to reset my phone bc i have my life on it please help asap

badazznc1 said:
i am having a problem with my data everything else work like mms texts calls and wifi calling but my s8plus is a verzion one before i updated its thur my surface pro 4 its its windows 10 everything up to date on but anyways ok let me explain this best i can i know a lot about phones I'm not noob to this but i cant get my data working i have verzion s8plus its stock and everything nothing has happened to it or been rooted but since its been updated to the December update that Samsung posted now my verzion s8plus turned into a tracfone s8 plus even has the build number NRD90M.G955USQS2BQL1 I think that's the verzion build number this is the service provider sw version its changed to SAOMC_SM-G955U_OYN_TFN_0149 9889194556524f534a TFN/TFN/VZW before its updated its was vzw/vzw/vzw but somehow Samsung put a new feature on the s8plus so when you have a new carrier sim in it don't matter what carrier you using i am using total wireless and i been using it since September of last year everything worked fine its even still had verzion boot logo and everything and when its updated its said new sim inserted so i hit ok so its rebooted and i notice that its changed the boot logo to tracfone wireless its changed everything all the verzion apps where gone off of it its had the verzion apps before and my data worked fine before bc Samsung ad all the carrier apns stored so whatever carrier you on its will have the apn there i liked that feature so you don't have to look it up online and enter it in but now its has the correct apn but my data aint working at all now i don't want to reset my phone to factory i tried everything in my power to enter another apn and its wont even let me change or add one or delete it if anybody can help me in anyway i would thank you a lot but i cant change roms either i cant even load the unlocked firmware to my phone either i tried before and its failed everytime so if you think i can change roms i cant because i cant get it to work so any help best way to contact me is on my email it is [email protected] so contact me on that or if anybody can help me change roms i would like to but i reallt don't want to reset my phone bc i have my life on it please help asap
Click to expand...
Click to collapse
Ok, so I dont have an answer for you, but your post is relevant to my situation. I have s8+ thats tracfone/straight talk on vzw towers... I'm wanting to put g955u1/xaa on it to unlock it... but unsure if I should use the tracfone fw or the vzw fw... any help is appriciated. Until then I'll just flash and test.