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[Q] Galaxy S does not show any carrier signal after factory reset

I had successfully unlocked my galaxy s using the procedure suggested on the related XDA forum.. the phone worked fine with a different network later on i accidently clicked the factory reset option.. now although the phone says its unlocked but i cannot see any network signal and the phone does not work on any sim card.
Pls can someone help
PS: I can switch on the phone and perform all other functions.

asif1981 said:
I had successfully unlocked my galaxy s using the procedure suggested on the related XDA forum.. the phone worked fine with a different network later on i accidently clicked the factory reset option.. now although the phone says its unlocked but i cannot see any network signal and the phone does not work on any sim card.
Pls can someone help
PS: I can switch on the phone and perform all other functions.
Click to expand...
Click to collapse
I could not say for sure because I don't know what process you used, but I Would say you just may need to downlaod the Factory TAR file using oden into your phone. Just make sure you Don't use the PIT file when you do it. Look in the Android Development section for the Tar file and the process of using Oden.

thanks for the reply.. did try loading just the tar files using odin but still no progress... another info, when i turn on the phone the notification drop-down does show the name of the network and says no service.. does that ring a bell ??

Cracked it !!
turns out that the software factory reset isn't all that effective and i tried the the hard reset by entering the code *2767*3855#... it worked like a charm and this time I had the carrier signal !!!!

asif1981 said:
turns out that the software factory reset isn't all that effective and i tried the the hard reset by entering the code *2767*3855#... it worked like a charm and this time I had the carrier signal !!!!
Click to expand...
Click to collapse
Good to hear you resolved your issue.

Hi, is having a corrupted IMEI prohibits you from getting network signal? I have weird IMEI characters (not numbers) after unlocking SGS4G and I cannot get any netwrok signal. Hope you can advise me what to do or check. I have exactly the sasme IMEI with this post.
http://forum.xda-developers.com/showthread.php?t=1030728&highlight=imei

hey man. try this and see if it helps at all:
http://forum.xda-developers.com/showthread.php?t=1142829

jager555 said:
hey man. try this and see if it helps at all:
http://forum.xda-developers.com/showthread.php?t=1142829
Click to expand...
Click to collapse
Hi Jager555, do you think it would be wise to try it out. I am not that confident to try it out because we have a different IMEI situation and I am afraid to brick another phone (bricjed captivate before). That is why I am waiting for someone to update the toher thread because that thread has the same IMEI that I have. If I won't be bricking my phone, then I would more than happy to try it out.

did you try disabling wifi calling? Same thing happened to me
Sent from my SGH-T959V using XDA Premium App

i cant guarantee that you wont brick your phone. its just something to try. as ricky said, disable the wifi and see if that helps, but if not, your phone doesnt work either way. im not sure if you can flash another rom and see if that helps too.
the thread i posted said "I recently used one of the unlocking tools that are available on the Android market, and one of them screwed up my IMEI so badly (it contained garbage characters, not just numbers)"
i figure thats the problem you have. if you dont want to try it, bump this thread and try to get a response from the smarter people. lol. im still a noob, good luck! i hope you get it fixed soon.

[Q] What is the LOCK icon means in the Network Operator?

Hello guys. I wanna know what is the meaning of the LOCK icon at one of the network operator?
Based on the picture, the operator for the Sim-card I use is ALTEL, but LOCK icon at MAXIS.

aimriddler said:
Hello guys. I wanna know what is the meaning of the LOCK icon at one of the network operator?
Based on the picture, the operator for the Sim-card I use is ALTEL, but LOCK icon at MAXIS.
Click to expand...
Click to collapse
The lock icon means that you can't use this operator because your sim card doesn't support this operator(you paid for Altel not for mymaxis)

Flatric said:
The lock icon means that you can't use this operator because your sim card doesn't support this operator(you paid for Altel not for mymaxis)
Click to expand...
Click to collapse
owh, i see..thank you..i thought that the reason why my mobile data not functioning well.. in *#*#4636#*#*, GPRS service is connected, but cannot use internet and got "!" at signal icon.. need to restart, airplane mode to make it functioning,..
btw, thnks

aimriddler said:
owh, i see..thank you..i thought that the reason why my mobile data not functioning well.. in *#*#4636#*#*, GPRS service is connected, but cannot use internet and got "!" at signal icon.. need to restart, airplane mode to make it functioning,..
btw, thnks
Click to expand...
Click to collapse
If you want to thank me press the "thanks" button pls do you have the right apns? Which Rom do you have currently installed?

Flatric said:
If you want to thank me press the "thanks" button pls do you have the right apns? Which Rom do you have currently installed?
Click to expand...
Click to collapse
The APN is correct. Using Euphoria now, before this Blisspop..same issue

aimriddler said:
The APN is correct. Using Euphoria now, before this Blisspop..same issue
Click to expand...
Click to collapse
Do you have the right modem?

Flatric said:
Do you have the right modem?
Click to expand...
Click to collapse
i tried a few modem from the forum..but still same..only 2G works well..others will have problem..even i got 3G,H++, there will be a problems for connection and speed..speed like worst than 2G

aimriddler said:
i tried a few modem from the forum..but still same..only 2G works well..others will have problem..even i got 3G,H++, there will be a problems for connection and speed..speed like worst than 2G
Click to expand...
Click to collapse
Some people said after they flashed the 1+1 stock images with fastboot and than installed their custom Rom again everything was fine afterwards, so maybe if you can't find any solution you could try this. Heisenberg has a tutorial for that in the 1+1 index thread.

Flatric said:
Some people said after they flashed the 1+1 stock images with fastboot and than installed their custom Rom again everything was fine afterwards, so maybe if you can't find any solution you could try this. Heisenberg has a tutorial for that in the 1+1 index thread.
Click to expand...
Click to collapse
it really frustrating..i sure its the phone problem not sim/telco/signal..coz i tried the simcard in other phone,just work fine..T_T
i'll try to find the Heisenberg post..meaning that i cannot flash stock using TWRP?..instead use fastboot?
i read this post on how to back to stock:
http://forum.xda-developers.com/oneplus-one/general/guide-return-opo-to-100-stock-t2826541
is it necessary to reset flag tamper?

aimriddler said:
it really frustrating..i sure its the phone problem not sim/telco/signal..coz i tried the simcard in other phone,just work fine..T_T
i'll try to find the Heisenberg post..meaning that i cannot flash stock using TWRP?..instead use fastboot?
i read this post on how to back to stock:
http://forum.xda-developers.com/oneplus-one/general/guide-return-opo-to-100-stock-t2826541
is it necessary to reset flag tamper?
Click to expand...
Click to collapse
I think reseting the flag tamper is not necessary, there's no gurantee that it'll work after this, was just an idea. Make sure that you have a backup of your data on the phone.

Flatric said:
I think reseting the flag tamper is not necessary, there's no gurantee that it'll work after this, was just an idea. Make sure that you have a backup of your data on the phone.
Click to expand...
Click to collapse
still not working..so sad and frustrating..T_T
what make it more annoying is the 3G network connected, but cannot be used..

GT S-7562 WIFI authentication error

Hello to every one...
I just decided to recycle my Galaxy GT S-7562 as an emergency phone but after an update to 4.0.4...
it doesn't want to connect to a wifi anymore. I always get authentication error...and the funny thing is that
the same happen even if i try to connect to an open network...!!!!!
Don't really know what to do...Anyone else have experienced it?
THX
David

David1501 said:
Hello to every one...
I just decided to recycle my Galaxy GT S-7562 as an emergency phone but after an update to 4.0.4...
it doesn't want to connect to a wifi anymore. I always get authentication error...and the funny thing is that
the same happen even if i try to connect to an open network...!!!!!
Don't really know what to do...Anyone else have experienced it?
THX
David
Click to expand...
Click to collapse
Well, Putting myself in your place, the first thing I would try is boot into recovery and wipedata/ factory reset wipe cache.
restart and check again.
if even after that It doesn't work
flash firmware through odin.
although I would not be dealing with this problem directly cause I don't know what exactly is causing this. So the easiest part, flash.

billysam said:
Well, Putting myself in your place, the first thing I would try is boot into recovery and wipedata/ factory reset wipe cache.
restart and check again.
if even after that It doesn't work
flash firmware through odin.
although I would not be dealing with this problem directly cause I don't know what exactly is causing this. So the easiest part, flash.
Click to expand...
Click to collapse
First off THX for your answer...
Billysam I already tried all the above with no luck... also flashed the firmware a couple of time. Last thing i did was to install
CM11. I'm starting to think that i could be an hardware problem....but well it doesn't look like..
David

David1501 said:
First off THX for your answer...
Billysam I already tried all the above with no luck... also flashed the firmware a couple of time. Last thing i did was to install
CM11. I'm starting to think that i could be an hardware problem....but well it doesn't look like..
David
Click to expand...
Click to collapse
I am uploading a whole zip file with everything that would hopefully return the device to factory default. my upload speed is pretty bad and its already an hour maybe another 5-6 hours and it should probably get uploaded. as soon as it get uploaded I will update my post and will share with you all.

billysam said:
I am uploading a whole zip file with everything that would hopefully return the device to factory default. my upload speed is pretty bad and its already an hour maybe another 5-6 hours and it should probably get uploaded. as soon as it get uploaded I will update my post and will share with you all.
Click to expand...
Click to collapse
OH Thank You! :good::good:

David1501 said:
OH Thank You! :good::good:
Click to expand...
Click to collapse
http://forum.xda-developers.com/s75...band-files-t3246791/post63949797#post63949797
Check this thread files have been uploaded

billysam said:
http://forum.xda-developers.com/s75...band-files-t3246791/post63949797#post63949797
Check this thread files have been uploaded
Click to expand...
Click to collapse
OK THX ver much will let u know the result as I'm done w it

http://forum.xda-developers.com/s756...7#post63949797
Check this thread files have been uploaded
Same thing..AUTHTENTICATION error ocurred...

David1501 said:
http://forum.xda-developers.com/s756...7#post63949797
Check this thread files have been uploaded
Same thing..AUTHTENTICATION error ocurred...
Click to expand...
Click to collapse
Even after completely flashing to default through odin, I would say don't flash anything more. its not the software's fault
There are 2 things now
Your router settings. for this there are many things that could make problems
1. First Check wifi password and be 200 percent sure that you're entering the right password.
2. Check at another place, another wifi. I also had trouble connecting at my friends wifi, it would keep returning with authentication error, but the same device connected to mine router without any error. (I still couldn't confirm why it happened there, I suspect my friend had blocked my device in router settings or gave me the wrong password)
3. Forget network, turn off your device, turn off your router, then turn on your device and your router , open wifi in device enter password again and connect.
4. Make sure bluetooth is off and only wifi is on.
5. Check if your Mac ID is not being blocked by the router (find MAC address in your device settings-wifi-advanced) enter your Router settings >>wifi>>MAC Filter disable the Mac filter.
6. Go into your router and go to advance and under wireless go to wireless card list and click set up access list ...add your device with the mac address.
7. Reset the router.
8. Change the security settings on the router, from WEP to WPA2/WPA or vise versa, change SSID name as well.
can connect through WPA push button?
9. Try changing wifi channel to 5, 6,7,8.
10. there are few app in play store that say they can fix the wifi issues one such app is wifix, try them too.
Even after going through all this it doesn't work, then I feel there is a chance that wifi module is at fault and the part would need to be replaced.
there are whole lot of people on the internet that have faced issues and are facing issues with the wifi be it any device,(same goes for the wife ) Guess it has a mind of it's own too.
Well best of luck.

Ok Thank you very much for your help....
I already went through what u suggest before to post my 1st msg...with no luck.
What i find strange is that i'm not even able to connect to an open network..and
still i believe that it has nothing to do with the hardware....
Auth error on an open network is weird....anyway...
THX
David

I'm facing the same problem ... authentication problem occurred... even on open networks.
flashed stock rom
still problem exists

//SM-N920V\\ **Nougat Odin Firmware N920VVRU3CQB9**

This is official Nougat firmware use this to update or just want to update
CP_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
BL_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
AP_VZW_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
CSC_VZW_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
https://www.androidfilehost.com/?fid=817550096634763863

JUSMEJOSE said:
This is official Nougat firmware use this to update or just want to update
CP_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
BL_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
AP_VZW_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
CSC_VZW_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
Will upload them tonight
Click to expand...
Click to collapse
waiting....

Please upload it.waiting..

link is up

JUSMEJOSE said:
link is up
Click to expand...
Click to collapse
thnx man u saved me a lot of headache with that upload :good:

JUSMEJOSE said:
link is up
Click to expand...
Click to collapse
I thought I saw a Google forms link on your signature 2 days ago asking who wants unlock? I filled the form. I hope to get a free unlock for my tmobile s7. It currently $70 on eBay. Been going up since last month. ?
---------- Post added at 01:45 PM ---------- Previous post was at 01:44 PM ----------
sevenalive said:
waiting....
Click to expand...
Click to collapse
Will this procedure clear data? Factory reset?

Can someone please confirm if this clears existing data? I thought Odin doesn't work in this case because of the locked bootloaded on Verizon?

ynag said:
Can someone please confirm if this clears existing data? I thought Odin doesn't work in this case because of the locked bootloaded on Verizon?
Click to expand...
Click to collapse
Yes, it probably will. If you are that worried about it, backup your data first. Odin will work even with the bootloader locked. Locked bootloader does not prevent you from loading official firmware.

gregcapps said:
Yes, it probably will. If you are that worried about it, backup your data first. Odin will work even with the bootloader locked. Locked bootloader does not prevent you from loading official firmware.
Click to expand...
Click to collapse
What app can we use to back up all data like apps sceen layout ect... since we don't have root on Verizon, I know we can't use titanium back up because we don't have root bit is their a similar app to do what that does

[email protected] said:
What app can we use to back up all data like apps sceen layout ect... since we don't have root on Verizon, I know we can't use titanium back up because we don't have root bit is their a similar app to do what that does
Click to expand...
Click to collapse
Not sure you'll be able to preserve that. I was referring to user data, not system data.

[email protected] said:
What app can we use to back up all data like apps sceen layout ect... since we don't have root on Verizon, I know we can't use titanium back up because we don't have root bit is their a similar app to do what that does
Click to expand...
Click to collapse
Helium or My Backup Pro, but they are limited without root, which means some data can be restored, but not all.
Sent from my SM-N920V using XDA-Developers Legacy app

JUSMEJOSE said:
This is official Nougat firmware use this to update or just want to update
CP_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
BL_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
AP_VZW_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
CSC_VZW_N920VVRU3CQB9_N920VVZW3CQB9_CL10809541_QB12868949_REV00_user_low_ship.tar
https://www.androidfilehost.com/?fid=817550096634763863
Click to expand...
Click to collapse
I extract and I get several files? None of them being .tar files. Does anyone have the 4 files to flash in odin? Am I the only one who didn't get the 4 files mentioned when extracting the Md5? Any help would be greatly appreciated.

Nobody?

patrickpingpong said:
Nobody?
Click to expand...
Click to collapse
You have to go in odin and select PDA and then add the entire md5 file! If you don't want to do it that way, then you have to download a zipping app like 7z or similar and create the .tar yourself.. Which is pointless unless you're planning on flashing 1 file like the boot.img for a reason or other.. The md5 file has all of the files that need to be flashed there's no need to unzip the files. Just flash as is!
If you're downloading from the OP then you need to unzip the file from the .zip because you can only flash .md5 or .tar.

MrMike2182 said:
You have to go in odin and select PDA and then add the entire md5 file! If you don't want to do it that way, then you have to download a zipping app like 7z or similar and create the .tar yourself.. Which is pointless unless you're planning on flashing 1 file like the boot.img for a reason or other.. The md5 file has all of the files that need to be flashed there's no need to unzip the files. Just flash as is!
Click to expand...
Click to collapse
Thanks. I have issue of my note saying "searching for signal" with full bars until i make a call. I dont think flashing the full file in Ap reset my modem to stock.

patrickpingpong said:
Thanks. I have issue of my note saying "searching for signal" with full bars until i make a call. I dont think flashing the full file in Ap reset my modem to stock.
Click to expand...
Click to collapse
Try flashing a modem only file then which is for that signal.. Also boot into recovery using the 3 button combo and clear your Cache after a flash..

MrMike2182 said:
Try flashing a modem only file then which is for that signal.. Also boot into recovery using the 3 button combo and clear your Cache after a flash..
Click to expand...
Click to collapse
I've cleared it after flash and no fix. Does anyone have a modem file I could use. Does it have to be from the same firmware version? Sorry just not really experienced just need to fix this phone it's killing me. I got it off Craigslist don't know the history of it I just know that flashing a fresh stock rom didn't fix the issue.

patrickpingpong said:
I've cleared it after flash and no fix. Does anyone have a modem file I could use. Does it have to be from the same firmware version? Sorry just not really experienced just need to fix this phone it's killing me. I got it off Craigslist don't know the history of it I just know that flashing a fresh stock rom didn't fix the issue.
Click to expand...
Click to collapse
Is it an actual Verizon phone? And do you know for sure that it's Verizon? Go into settings then about phone and tell me what model it says. If it says other than SM-N920V then it's not a Verizon one.. You can only flash firmware for a specific carrier.. Also check the APN settings too.. And about the modem no you don't have to use the same exact one from the same firmware version you can try a different one however I don't think that'll fix the problem.. Try checking the APN settings first.. Also if you just dropped a sim card into it without first giving Verizon the IMEI then it's not gonna work! You'll have to give them the IMEI and if the IMEI is bad the phone will never work at least not with Verizon.

MrMike2182 said:
Is it an actual Verizon phone? And do you know for sure that it's Verizon? Go into settings then about phone and tell me what model it says. If it says other than SM-N920V then it's not a Verizon one.. You can only flash firmware for a specific carrier.. Also check the APN settings too.. And about the modem no you don't have to use the same exact one from the same firmware version you can try a different one however I don't think that'll fix the problem.. Try checking the APN settings first.. Also if you just dropped a sim card into it without first giving Verizon the IMEI then it's not gonna work! You'll have to give them the IMEI and if the IMEI is bad the phone will never work at least not with Verizon.
Click to expand...
Click to collapse
It is indeed n920v clean imei through verizon prepaid. It gets apn through SIM card which is accurate I have signal T all times and internet/mms work. However when I boot my phone or randomly every so often it will say 'searching for service' throughout the day while still full having signal. During this time I don't receive calls/messages/internet notifications and it is stuck that way until I notice it and dial my voicemail which it then displays "Verizon wireless" and then all notifications come through.

patrickpingpong said:
It is indeed n920v clean imei through verizon prepaid. It gets apn through SIM card which is accurate I have signal T all times and internet/mms work. However when I boot my phone or randomly every so often it will say 'searching for service' throughout the day while still full having signal. During this time I don't receive calls/messages/internet notifications and it is stuck that way until I notice it and dial my voicemail which it then displays "Verizon wireless" and then all notifications come through.
Click to expand...
Click to collapse
Maybe try using this downgraded version from my Android File Host and flash it using odin but before flashing take the sim card out and after it's done flashing immediately do a factory reset by holding the power and volume down button and after the screen turns off and then back on select shut down and then boot into recovery and do the factory reset after it's finished put the sim card back in then turn it on and go through all the setup and see if it works.. Let the phone charge some first don't try doing this at 3% battery cause if it shuts down in the middle it can brick the phone. Not likely but it could.
https://www.androidfilehost.com/?fid=889764386195900074

No network at all? (Please help!)

So I switched over from 4.4.4 to MIUI 8 Global (6.0.1) almost a week ago and I have had no data since then, but I could make calls and receive texts. Yesterday morning to find that I had no service of any kind on my device... Any ideas? I tried flashing different radios and I am shown that I have signal for a split second before it goes back to no bars, attempted to set the carrier manually too but nothing seems to stick.
I am on the Ting network in the western half of the US if that helps any.
Thanks guys, my N5 and I greatly appreciate it!

Does the phone work properly on a stock ROM? APN settings are correct for data purposes ? Was the phone bumped or dropped?

On my moms nexus 5 the wifi wasn't working anymore so i reflashed the stock rom and it started working again. If you don't want to have to resort to losing data you can try checking if the antennas if they are disconnected on the back of the phone. Just take off the back covers and plug the antennas back in and that might help

audit13 said:
Does the phone work properly on a stock ROM? APN settings are correct for data purposes ? Was the phone bumped or dropped?
Click to expand...
Click to collapse
The signal works on stock and 5, haven't dropped the phone

Sounds like the custom ROM doesn't work well with your phone. Any other users of the same rom experience the same issue?

audit13 said:
Sounds like the custom ROM doesn't work well with your phone. Any other users of the same rom experience the same issue?
Click to expand...
Click to collapse
I saw a few things said about it in the ROM's thread but no answers. I asked in there as well but nobody replied.
I can sometimes make calls/text, but for the most part is just stays disconnected.

Jiharu Ikumiya said:
I saw a few things said about it in the ROM's thread but no answers. I asked in there as well but nobody replied.
I can sometimes make calls/text, but for the most part is just stays disconnected.
Click to expand...
Click to collapse
Are you sure you have Efs folder after flashing any custom rom?

Stevica Smederevac said:
Are you sure you have Efs folder after flashing any custom rom?
Click to expand...
Click to collapse
If I did where would I find it? I apologize, I'm still very new to all of this.

Jiharu Ikumiya said:
If I did where would I find it? I apologize, I'm still very new to all of this.
Click to expand...
Click to collapse
About phone - phone status. You should imei number, serial number, wifi mac address.

Stevica Smederevac said:
About phone - phone status. You should imei number, serial number, wifi mac address.
Click to expand...
Click to collapse
Yeah everything was there, it just said I had no network. Anytime I try to connect it flashes sprint for JUUUUUST a second before kicking me off lol. I'm using my stock 4.4.4 for now so I at least have a working phone, but I really would like to use the MIUI 8 if possible.
Sorry for the slow reply, I've been busy.

Jiharu Ikumiya said:
Yeah everything was there, it just said I had no network. Anytime I try to connect it flashes sprint for JUUUUUST a second before kicking me off lol. I'm using my stock 4.4.4 for now so I at least have a working phone, but I really would like to use the MIUI 8 if possible.
Sorry for the slow reply, I've been busy.
Click to expand...
Click to collapse
Then it's obvious that the MIUI rom is causing the problem. You should move to something else.