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help regarding automaticaly changed imei of note 2 n7100

i bought new sgh note 2 n 7100...on booting O2 carrier image pop ups...my note worked like a charm through out...i also updated it to official firmware upgrades rolled out by google n did master reset couple of times but there was no problem with its working....then suddenly one day its imei changed to 00499901064000....i didnt install any app or tried to root it....now it doesnt recognise network of my sim n only emergency call facility is available....kindly help me out....n i m using it in pakistan where O2 carrier isnt present

[Solved by my self ][Q] no radio, no imei, no baseband

plzz hellpp...!!
i flashed custom rom using cwm recovery...
it has been flashed successfully but my cell shows no sim card !!
i tried lot of methods of this site...
but i cant switch on radio of my phone and cant recover my imei...
plz show me the method to switch on radio of my phone...
i know the method to recover my imei using engineering mode but it dont send to command because my radio is off...
engineering mode shows the " radio off "
so plz tell the method to switch it on...
i have micromax A63 ( mtk 6572 )
thanks..!!

Hello. I saw this. And I'm wondering will this work for s4 clone. And what ROM did u use and how after u flashed it did u fix imei etc

Ya..i fixed all the things..baseband...wifi...and imei too...!!

dali786546 said:
Hello. I saw this. And I'm wondering will this work for s4 clone. And what ROM did u use and how after u flashed it did u fix imei etc
Click to expand...
Click to collapse
Try the 2nd option of this post
http://forum.xda-developers.com/showthread.php?p=49196336

How Change my Galaxy J7(SM-J700F) IMEI ?!!

Im installed a custom rom (CM13 6.0) For My Galaxy J7 (SM-J700F) After that my IMEI had changed and i can't use my netword and calls again .
how i restore my old IMEI again ?!

I think if you flash the stock rom your old imei will be back

If possible Plz Find another J7 which have custom recovery and backup his efs than put it folder from his phone to ur phone In backup folder than restore it...
I think its backur network....
Note: Do it first before Flash any rom... Backup all files with twrp

Same Problem here
Hi I'm using the Galaxy J700H phone its like 2mos old, and have the exact same problem, so please can someone help? My problem is, I think also is my IMEI number? When i dialed *#06# on my phone my IMEI is 350000000006 and FTW that's not even my IMEI anymore, I have the original IMEI number here backed up but i tried everything, step by step. But sadly nothing worked out. I used this sim card in all of my phones and lastly when i wiped out my phone and flashed custom rom in it, then this happened, then i decided to flash the stock rom that has been downloaded from the sammbobile.com website, after that nothing happened. My phone always displays EMERGENCY CALLS ONLY.. pls help

[Completed] Have signal but not registered on network

I have Samsung Galaxy S3 GT-I9300. When the google drive app was downloading from google play, my phone went off due to poor battery. Later when I tried to turn it ON, it has been getting stuck in the boot. So I decided to reinstall my custom ROM. Being busy with my baby, toddler, household chores and job, I gave it to my brother to flash the ROM. After a while, I noticed that my sim was bricked.
It says "Emergency Calls Only", has fake IMEI but working signal.
We did not backup the efs. I tried searching all the methods like modem installation, CSC, baseband verions, IMEI re-write, Kies Upgrade and Initialization, other people's efs restore, etc. But the problem is unchanged. Some of the followed method might have failed for not having proper knowledge like IMEI re-write tool works on specified chipset, etc.
What we noticed is that using different baseband version toggles from having network signal or no signal.
Kies shows more than four firmware versions and no other details like CSC, etc.
How do I clean up all these especially to have SIM working on my phone?
I appreciate you assistance to be brief and clear to understand steps than sending links. Because my time is stress-fully short.

Hi !
There is some confusing info in your post
What do you mean with it has fake IMEI " ? Have you changed it ?
You say that you have a working SIM on certain basebands , is this happening on a custom rom or stock ?
Have you tried to flash a stock firmware as I see that you tried to flash "your custom rom " ?
Cheers !

First of all, thank you for your response and interest to assist.
My mobile's IMEI is shown as 004999010640000 which is not original. Can you help me to change it to correct IMEI suitable for my Samsung S3 GT-i9300 chipset, if that helps in enabling sim to connect to a network? I think changing method only masks the IMEI?
I have tried flashing stock firmware and also Kies Upgrade and Initialization.
I have also changed baseband version installation on stock ROM too. I don't know which baseband is correct to keep.. for my country India or in the country where my mobile is manufactured, incase that's locking sim accessibility? Some baseband bought signal and detected the network operator name, but the message still says "Emergency Calls Only" and is unable to connect to a network.
I presume this problem arose when installing custom ROM from TWRP recovery and it messed up with efs partition?
I had successfully flashed custom ROM many times before without this problem. I think there's some next step to follow to bring back the working sim like I heard of installing modem. I did just try installing modem but same problem as my baseband is already bringing signal.
I had tested my phone from sim unlock app and found out that CSC is locked and it limited specified MCC and MNC numbers. Is this hindering connection to Indian mobile network? Or corrupt efs? Or missed to manually install something?

Bump.

S8+ sim card detected but not working after flashing custom ROM.

Hi ,
I recently flashed my Galaxy S8+ with Hades ROM which is a ONE UI based ROM .
Everything works fine but sim card is not getting any signal or just shows " not registered on network" sometimes.
But it do work sometimes when connected to WiFi n when WiFi calling is enabled , but I can't use my mobile data or calls from my carrier network.
THE PHONE BASICALLY HAS FEW ISSUES BEFORE FLASHING NEW ROM .
1 ) It was bought from UAE and it was already rooted when I got it .
2) Attempt to flash stock ROM failed everytime cz the SIM card was not detected even when it was in stock ROM itself.
3) so many try with different versions of Odin and different versions of Stock firmware , it did not work .
Please give me some fix .
(NOTE) : SIM card is working very fine but the issue is with the phone itself.

What is so "secret" about this topic, that no one of the experts likes to talk abaout it and help us out? So many have this problem. Even though for those like me who have a stock backup auf EFS and Baseband. If somebody would be so kind to send a pn with further hints would be very kindful. Thanks a lot folks.

I had the same problem after flashing the stock ROM, but i just can't find help with this problem.
I gave up and bought a new phone.