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hi there!
Ive read all I could and despite coming across several similar problems, haven't found an answer (so if anyone has an idea, plz help!)
I'll try to be as concise as possible:
I have a message that says: not registered on network
I have a China Unicom galaxy S3 (international model, gt-i9300) not copy, original version, bought from service provider store, running forever on android 4.0.4 (no updates available, via kies, or software update whatsoever)
As you know, because it was bought in China, it's blocked from factory settings (no svoice, google play, among others and of course a reduced overall functionality and an alarmingly high used of RAM despite of every app being closed) and even you can download most apps, they're in Chinese and they're different and not completely working versions of them (i.e. fb, skype,...)
Read and read, until managed to do rooting via heimdall (only have mac available), once installed SU, managed to download and install google play, but it kept on crashing, along a previously (VPN only) functioning fb app, and twitter.
After a while of more research I came across odin mobile, and by downloading an international ROM from Hong Kong via Sammobile, managed to install 4.1.2 from HK (I9300OZSEMC1). Despite the now no restriction phone i had, i came across a problem: cannot call or message or use mobile data, only with a message that says " not registered on network"
I did check the sim card, and selected the network manually, without success.
I checked the AP, CP and CSC and they were unknown.
After much frustration i remember i had a backup if the original carrier, and after re-rooting, managed to get back to the super blocked version of it, bu t the problem remained: not registered on network.
I checked again the ap, cs and csc and now are back to factory default (just like they were before all this odyssey began).
I changed the sim card to my gf's iphone and it works there, just not on the galaxy....
I repeated the above two times more, using roms from HK, Taiwan and UK..... same problem, even when going back.
Any ideas? I'm quite desperate now
thanks!!!
Is your IMEI the same as under the battery .
If not restore your backed up EFS folder.
No backup = service centre .
Do you have the correct modem and CSC for your network .
jje
JJEgan said:
Is your IMEI the same as under the battery .
If not restore your backed up EFS folder.
No backup = service centre .
Do you have the correct modem and CSC for your network .
jje
Click to expand...
Click to collapse
yes, imei is the same
before doing all the process, i verified and saved screen captures of how it was before and after, both pictures coincide, but still nothing...
(what is EFS folder? , i've done this with little knowledge on the topic, so i've no idea what's that ^^"
I guess service centre might help, but well, since this is China... i expect the worst.
omenlo said:
yes, imei is the same
before doing all the process, i verified and saved screen captures of how it was before and after, both pictures coincide, but still nothing...
(what is EFS folder? , i've done this with little knowledge on the topic, so i've no idea what's that ^^"
I guess service centre might help, but well, since this is China... i expect the worst.
Click to expand...
Click to collapse
I'm assuming you may have changed the modem during the flashing of the HK fw, try finding a Chinese Modem and flashing that. TBH this is why people tell you to read and read again before rooting and flashing custom roms.
Hi guys, I know this is an another post on the same problem, but I follow all trhead on this argument without result.
I have an samsung galaxy s2 whit null emai. I lost it! But I have an old backup of EFS (I thinks it is corrupt because if I restore it, does not change anything )
I tried to restore whitouth success from this backup
I tried factory restore
I tried to recreate the EFS folder whit your two guides
I tried to flash the original firmware from odin whit auto reboot - repartition - F. reset time (I use the file from original firmware but I do not get even a generic imei, it stay null)
I don't know what I can do, and I can't pay 100$ for jtag box only for re enter my own emai
I have another samsung galaxy s2 where the software working (my sister's phone) but has hardware problems. Can I make a full dump of rom and pass it in my phone?
there is a way?
P.S. sorry for my bad english.
updating: I tried to put the EFS folder from my sister's phone to mine but the imei still remains null.
P.S. Sorry for the wrong section
Trying to put the EFS folder from another phone into yours will never work, and changing the IMEI is illegal in most places anyway if you use a particular piece of hardware that mobile repair shops/Samsung authorised repairers use to 'write' the IMEI back to the phone if you bork it.
If you don't have a good EFS backup, it's a service centre job normally, but there are quite a few threads on here which claim to be able to fix it. You might want to look at those; I can see you've obviously tried some things, unless you want to take it in to be repaired, keep trying stuff.
I don't recommend you try to fix this yourself with a JTAG box/similar for two reasons:-
1) You'll be paying for something you'll never use again
2) If you mess it up, it will be a service centre job anyway (or if you slip with the soldering iron, you could damage the phone beyond repair) which you'll pay for plus the cost of the box which you'll never user again.
So take it to someone who knows what they're doing.
No. Trying to copy details from another phone will not fix the problem because the IMEI is a unique hardware identifier which is assigned to the particular radio in your phone.
Same here!
I purchased this phone from a eBay seller and had it shipped to India. Didn't compare IMEI with the one under the battery (stupid, I know) when opening the package, or before flashing to JB firmware. Next thing I know, phone calls are not going and emergency calls only available, even though data network is working fine.
What I did after that (no particular order):
1. Flashed with stock GB, ICS and JB
2. Rooted
3. Tried fixing by steps in http://forum.xda-developers.com/showthread.php?t=1264021&highlight=recovery+IMEI
4. Tried fixing using SGII_Repair
5. Tried fixing using HC-kTool
All failed!
Next option looks like buying a SRS licence and changing IMEI to what is there under the battery. Would this work safely, and restore order to normal in phone? Anyone!! Phone is perfectly new, no signs of use, so assume that I was shipped a proper piece.
MistahBungle said:
Trying to put the EFS folder from another phone into yours will never work, and changing the IMEI is illegal in most places anyway if you use a particular piece of hardware that mobile repair shops/Samsung authorised repairers use to 'write' the IMEI back to the phone if you bork it.
If you don't have a good EFS backup, it's a service centre job normally, but there are quite a few threads on here which claim to be able to fix it. You might want to look at those; I can see you've obviously tried some things, unless you want to take it in to be repaired, keep trying stuff.
I don't recommend you try to fix this yourself with a JTAG box/similar for two reasons:-
1) You'll be paying for something you'll never use again
2) If you mess it up, it will be a service centre job anyway (or if you slip with the soldering iron, you could damage the phone beyond repair) which you'll pay for plus the cost of the box which you'll never user again.
So take it to someone who knows what they're doing.
No. Trying to copy details from another phone will not fix the problem because the IMEI is a unique hardware identifier which is assigned to the particular radio in your phone.
Click to expand...
Click to collapse
No no, I do not want to change imei! I want to put my imei xD and I think this is not illegal, I tried with my sister's efs only for using an clean EFS folder where I can work, I know all EFS are proprietary for each device.
Anyway the soldering are not a problem, but I agree with first point.
I have another question, on GT-I9100 whitouth imei is possible to put the usb in qualcomm mode? i tried with
su -c 'am start -n com.sec.android.app.phoneutil/com.sec.android.app.phoneutil.USBSettings'
Click to expand...
Click to collapse
but this has generated an error:
Activity class {com.sec.android.app.phoneutil/com.sec.android.app.phoneutil.USBSettings} does not exist
Click to expand...
Click to collapse
obviously the telephon is rooted and have su permess and busybox
is there another method?
@diffuser911 Unfortunately, I tried the same as you without success :\ Can you enter in qualcomm mode? perhaps you can solve with NV tool (it is in EFS PRO)...I dunno
[email protected] said:
No no, I do not want to change imei! I want to put my imei xD and I think this is not illegal, I tried with my sister's efs only for using an clean EFS folder where I can work, I know all EFS are proprietary for each device.
@diffuser911 Unfortunately, I tried the same as you without success :\ Can you enter in qualcomm mode? perhaps with NV tool (it is in EFS PRO) you can solve...I dunno
Click to expand...
Click to collapse
Can't say I could :silly: I am quite dumb when it comes to android stuff. Which one did you try, SRS server IMEI repair? I have another guy who claims he can fix the phone over the internet for 10 EUR, google for cvxcvx, Polish site.
Have contacted him, awaiting repsonse.:fingers-crossed:
diffuser911 said:
Can't say I could :silly: I am quite dumb when it comes to android stuff. Which one did you try, SRS server IMEI repair? I have another guy who claims he can fix the phone over the internet for 10 EUR, google for cvxcvx, Polish site.
Have contacted him, awaiting repsonse.:fingers-crossed:
Click to expand...
Click to collapse
No I didn't try because in the tutorial they refer to phones with a generic imei and mine have empty imei, I would not waste money if the software don't work.
I hope you solve .
I wanted to try the tool of @lyriquidperfection here: http://forum.xda-developers.com/showthread.php?t=1308546
But I have not found a way to get qualcomm mode
diffuser911 said:
Can't say I could :silly: I am quite dumb when it comes to android stuff. Which one did you try, SRS server IMEI repair? I have another guy who claims he can fix the phone over the internet for 10 EUR, google for cvxcvx, Polish site.
Have contacted him, awaiting repsonse.:fingers-crossed:
Click to expand...
Click to collapse
Hi diffuser911, Did You solve with cvxcvx?
[email protected] said:
Hi diffuser911, Did You solve with cvxcvx?
Click to expand...
Click to collapse
That guy isn't too responsive. Asked him to check if system is accessible via the tools he recommended, he wouldn't budge beyond payment. I am thinking of going the SRS Server way.
hello, somehow my imei got null probably because of rom. I couldn't succeded restoring imei but I know the number so is there a way to write my imei manually ? Thank you.
Google RIFF box. Or you could try flashing some stock roms; sometimes the IMEI disappearing is temporary & flashing stock brings it back. Without a good EFS backup, you won't be fixing this easily yourself.
If flashing stock doesn't bring it back, my advice would be to take it to a local mobile repair shop/someone who knows what they're doing. It will be a lot cheaper than you paying for a RIFF box (that you'll never use again), plus, if you don't know what you're doing, you could bork your phone to the point where you'll need a motherboard replacement if you get it wrong.
Do the smart thing.
by a accident i deleted my EFS file etc. when i was flashing a custom firmware. Then my phone was working correctly except my GSM.
I searched all the internet and i couldn't find a way to take restore my efs. Than i went to a local telephone technical service in my town and he fixed my phone. But i didn't realise he didint use my original imei. I used the phone a several months then suddenly my phone's gsm didint work. So i controlled my imei and it was "004999010640000". And now i need to change my imei number to my original one. How can i do that? i tried "IMEI MAKER/MP0B_001 file method", "MtkDroidTools" and "MauiMETA 3G" and also some other programs. They worked but specially IMEI parts didnt work.
So i need your help. If its a illegal thing. Just PM me. I didint do anything illegal an i need my phone back.
hi my old friend sorry to hear that some technicians used "bluebox" for restore and attach imei. i dont know any idea :/
px7009 said:
by a accident i deleted my EFS file etc. when i was flashing a custom firmware. Then my phone was working correctly except my GSM.
I searched all the internet and i couldn't find a way to take restore my efs. Than i went to a local telephone technical service in my town and he fixed my phone. But i didn't realise he didint use my original imei. I used the phone a several months then suddenly my phone's gsm didint work. So i controlled my imei and it was "004999010640000". And now i need to change my imei number to my original one. How can i do that? i tried "IMEI MAKER/MP0B_001 file method", "MtkDroidTools" and "MauiMETA 3G" and also some other programs. They worked but specially IMEI parts didnt work.
So i need your help. If its a illegal thing. Just PM me. I didint do anything illegal an i need my phone back.
Click to expand...
Click to collapse
IMEI is send over your carrier database, they check all IMEIs over network, your IMEI probably was banned because used IMEI number from someones lost or stolen phone
Messed up with my G925F!!!
Hello , my phone suddenly was not able to make or receive any calls or joining 3G/4G network or SMS. In other words, I was out of service although my SIM had not problems to enter the PIN password and I could see signal bars.
After a little research I discovered that my IMEI and S/N number had been changed! Especially, the IMEI number became 350000000000006 (fake one) And I believe this is the reason my signal went off!
So , I just managed to download smart switch from samsung and choose "emergency software recovery and initialization -> device initialization" in an attempt to revert it to stock rom and settings (is this method unroot the phone too?)
But after this long downloading finished , the phone didn't boot , I only see the samsung galagy s6 edge logo stuck!!!!
So , I decided to root the phone again , following the guide here (link-->), zidroid.com/how-to-install-twrp-root-galaxy-s6-edge-on-android-5-1-1/
(in short words , I installed the twrp recovery with odin and I flashed 2 zip files required, from an usb-otg-flash drive, via the twrp recovery install button) and then the phone booted normaly , but the problem with the signal and wrong IMEI was still there!
I feel that I am on dead end , I don't know what to do , I am thinking about sending it to the location I bought it but I am afraid that the warranty is lost.
Please help me restore my phone back to normal
After repeating the whole procedure several times , now my phone does not recognize SIM card at all , as if it was never inserted , wtf?
Go to gsm forum and here you got help ..you have bricked imei number
Sent from my SM-G925F using Tapatalk
You have go to professional repair which they can repair your device you probably not going to restore your original IMEI back you can solved your problem
Sent from my ONE A2001 using XDA Free mobile app
Coolmfarshard said:
You have go to professional repair which they can repair your device you probably not going to restore your original IMEI back you can solved your problem
Sent from my ONE A2001 using XDA Free mobile app
Click to expand...
Click to collapse
So you mean that there isn't any way of backing up the IMEI number first before rooting or changing a rom/kernel/recovery to the phone in order not allowing this IMEI bricking happen again by means of restoring from its backup?
I googled a lot and some people suggest that they can backup EFS in some way. What is EFS exactly and how it is related to IMEI?
Also wouldn't be a good idea to find a way to backup my entire OS/firmware (not just IMEI/EFS) before doing anything , in case to save money and avoid the same bricking?
And yes , I have sent the phone to samsung service , it will cost me around 320 euros , because they discovered I changed kernel/rooted the device , and they will change motherboard.
I cannot help the phone without being rooted , I love rooting but I cannot understand why suddenly IMEI got bricked.....does it worth to take risk and root my phone again? But I want IMEI or entire OS backups first before doing that and I don't know how to achieve this without rooting first...
Please help me if you could.
You can backup your full os using twrp recovery
Also your IMEI
In SAMSUNG devices imei number stored in efs partition that's why people asking take efs backup before flashing any Rom
Sent from my ONE A2001 using XDA Free mobile app
Any efs backup file for sm-g925f 64gb where i got it?
Sent from my SM-G925F using Tapatalk
Me too!
bob7greeklover said:
After repeating the whole procedure several times , now my phone does not recognize SIM card at all , as if it was never inserted , wtf?
Click to expand...
Click to collapse
Me too! I have the exact same IEMI number! Mine stopped working after about a month. I tried to return to seller no response. I tried to send phone back they would not accept phone, so it is on it's way back to me. Once I get it back I will try what you did.
I have taken it to factory settings 3 times no luck. I will try your process once I get me phone back.
Thanks!
---------- Post added at 02:25 AM ---------- Previous post was at 02:16 AM ----------
bob7greeklover said:
After repeating the whole procedure several times , now my phone does not recognize SIM card at all , as if it was never inserted , wtf?
Click to expand...
Click to collapse
I did contact one of those fellows a reputable one that can change your IEMI. Well once he heard that crazy IEMI number, he said because it was changed once before to something like he doubted he could change it again and save my phone. To try he charges 100 US plus I have shipping there and back. Yikes.
So any advice you can give me I would truly appreciate.
Thanks!
g925f imei repair
new g925f repair method
repair ok
:good::good::good::good::good::good::good::good:
Mine went down recently with the exact same IMEI and no SN. TWRP was failing to restore the efs partition damaging the files in the process. Long story short, I had to manually extract the efs files, copy them across and fiddle about with permissions but I'm working again.
That nugget rings true - always backup the efs before changing anything.
But for that reputable fellow to say that the IMEI had been changed before because of what it had become, and insinuating that the imei couldn't be changed more than once was complete twaddle. I wouldn't trust him near any of my phones.
On a lighter note I'm sure there's got to be a member on here would sort it for beer tokens
Happened to me, I thought it was faulty ROM and all but then I realized it was simply apn setting. Resetting it to default did the trick. It can be found in Settings > Mobile networks > Access Point Names
bob7greeklover said:
Hello , my phone suddenly was not able to make or receive any calls or joining 3G/4G network or SMS. In other words, I was out of service although my SIM had not problems to enter the PIN password and I could see signal bars.
After a little research I discovered that my IMEI and S/N number had been changed! Especially, the IMEI number became 350000000000006 (fake one) And I believe this is the reason my signal went off!
So , I just managed to download smart switch from samsung and choose "emergency software recovery and initialization -> device initialization" in an attempt to revert it to stock rom and settings (is this method unroot the phone too?)
But after this long downloading finished , the phone didn't boot , I only see the samsung galagy s6 edge logo stuck!!!!
So , I decided to root the phone again , following the guide here (link-->), zidroid.com/how-to-install-twrp-root-galaxy-s6-edge-on-android-5-1-1/
(in short words , I installed the twrp recovery with odin and I flashed 2 zip files required, from an usb-otg-flash drive, via the twrp recovery install button) and then the phone booted normaly , but the problem with the signal and wrong IMEI was still there!
I feel that I am on dead end , I don't know what to do , I am thinking about sending it to the location I bought it but I am afraid that the warranty is lost.
Please help me restore my phone back to normal
Click to expand...
Click to collapse
user0604 said:
Happened to me, I thought it was faulty ROM and all but then I realized it was simply apn setting. Resetting it to default did the trick. It can be found in Settings > Mobile networks > Access Point Names
Click to expand...
Click to collapse
Since this thread is quite old and people keep answering , I want to end it like this:
Back then I didn't avoid to pay about 300 euros to replace its motherboard to a samsung shop. But I learned lately that the issue was due to an app called "USB OTG Helper" (https://play.google.com/store/apps/details?id=net.shajul.usbotg&hl=en) which allows you to insert NTFS USB flash drives to your OTG phone but also enables a system partition , including EMS files to be visible.
And you can guess what happened next , I deleted this system partition which this app made it visible and yes , my IMEI was gone!!! After some months , I repeated the same delete thing , but previously I had backed up via TWRP the EFS and MODEM partitions. My phone lost IMEI again , as expected , but after restoring EFS and MODEM , the IMEI was back!!
To sum up , never delete files or partitions that look like "system" like bluetooth and imei folders when you are root AND always have a backup of all your rom via twrp or something else before changing/deleting/flashing anything related to your system.