Help me. I have a problem on my new oppo a37fw. Oppo nv partian is invalid.... - Oppo A37 Questions & Answers

I have a problem on my new oppo a37fw.
I forget the password of my newly bought oppo a37fw. I search on google and checked all of the link releated wih restoration process but no one method worked for me. Finally i decided to flash with stock firmware of oppo a37fw and i flashed it on my phone. I was happy with the removed password fresh phone but when i put sim cards on it, it doesn't accept no any reacts wih my sim cards. An error always shows when i trun on my device. "Oppo_NV_Backup The NV partian is invalid!". I have no idea how to restore and i dont have any backup. I have showed my phone to nearest shop but they want more charges from me. So finally i am here to solve my problem with the help of XDA team. I hope that there is a solution for this proplem.
PLEASE PLEASE PLEASE HELP ME AS SOON AS POSSIBLE....
THANKS IN ADVANCE....

Related

MDA Compact Sim Locked itself

I have been using my T-Mobile MDA for more than 3 years, and suddenly it decided not to work on O2 anymore.
I have tried the sim in a different phone and it works.
When I try a T-mobile sim or a Virgin sim in the MDA, it works.
It won't recognize any other networks for some reason.
I have re-flashed the ROM, but still no joy.
What I've come to notice is that the IMEI number shown on the screen when you press: *#06* is different to the number printed at the back of the phone.
Could it be that T-Mobile UK are playing games, and want us to go to them to unlock our phones???
I would be very grateful to you guys if you could please help me unlock the phone again.
P.S: I have tried to use Xdadev_all_unlock, and that says "phone unlocked", but still no joy.
It seems you now have 2 IMEI numbers registered on the same network.
The IMEI number you are using, may also be 'barred/banned', for whatever reason.
You need to search the forum for the tool to change your IMEI to whats on the sticker under your battery.
Hi there Nokia3650,
thanks for your reply.
I have tried to search for the tool to change the IMEI, but couldn't find it.
Could anyone with the info on this tool please help?
Your help will be most appreciated,
Thanks,
Jas.
Vlodec, will have the best soloution to getting the IMEI changed.
I think the tool currently being used is 'loki unlocker'.
hiya Nokia 3650, thanks once again for the message.
Where would I find the tool? I have looked all over the place, but still no luck.
Do you have a copy that you could forward to me?
Hope to hear from you soon.
Kind Regards,
Jas
Jassy29, I don't have it stored on my HD, but I'll post the URL from the downloads section when I find it.
As I recal, its actualy in the charmer threads (should still be compatible, as its just a DOS batch file).
This is what you need:
http://forum.xda-developers.com/showthread.php?t=249474
Hi Nokia 3650,
Thanks for your reply, and concern. I just tried the program/software you suggested, but no luck.
It seems to some up with an error message, and resets my phone, but nothing else.
Do you know of any other software?
Would it help if I could change the IMEI back to the original? (I'll have to figure out how to do this).
Thanks again,
Jas
Still waiting for some help????
Hi people,
Is there no one out there that can help me out on this one?
I have tried to look for software to change the IMEI on the phone, back to what it was, but have had no luck.
I would be very grateful to anyone out there that can help me out on this one please please????
Regards,
Jas
HELLO???? Anyone out there capable of helping me?
I need to unlock this phone.
Why isn't anyone replying?????????

[Q] my imei is off

hi guys my phone is x5 u8800 but i have a problem my phone's imei is gone. i cant see it. i root and format and its gone. my problem is also connection with sim cart. i hav 1gb/month internet on my phone operator but i cant use it. please help me. do me a favor.
Only way to fix this is to get a new motherboard. So you have to send it to warranty and hope best.
i have warranty and imei number it must be another solution

[Q] S4 GT-I9500 can't make call "Not registered on network"

UPDATE!!!
30/08/2013
My phone can make call mow... back to normal state... but still have imei problem...
Anyone who wants to know how... why... or whatever... please, contact me through pm... leave your email for me...and please, explain your problem... I will try my best to help you out...
I am very busy look after my daughter...so please be patient if I reply your mail late...
Once again... please leave your email in my pm or I will not answer your pm or post. Sorry but I can't log in here more often...
Good luck to you all...
Angel S.
-----------------------------------------------------------------------------------------
"Original thread"
Hello everyone,
Well, back again with the problem that can't find any solution anywhere.
I've opened a thread about fake imei on this site earlier which can find a solution already. Now the imei and the S/N become original one but the phone still can't make any call. I found the thread about a patch that can fix this issue but it works with NOTE2 and S3 only... so, I'm afraid to try that with my S4 GT-I9500 since it's very hard to find a fix for its problem... I don't want another problem for my phone now...
So, the status of the phone is unlock, root, on latest stock firmware(I9500XXUBMG1), Baseband is I9500DXUBMF8,
Software status on phone: Network=Unknown, Mobile Network Type=Edge:2, Service State=Out of service...
When I check with AndroidDump the Telephony said:
IMEI=(my original IMEI)
CallState=IDLE
DataActivity=NONE
DataState=DISCONNECTED
NetworkType=EDGE
PhoneType=GSM
SimState=READY
CellLocation=[16427,50572,-1]
DeviceSoftwareVersion=01
Line1Number= (it's blank)
NetworkCountryIso=th
NetworkOperator=52018
NetworkOperatorName= (it's blank...again)
SimCountryIso=th
SimOperator=52018
SimSerialNumber= (my sim serial number)
SubscriberId=52018961057xxxx (this is my IMSI)
VoiceMailAlphaTag=VOICEMAIL
VoiceMailNumber=1802 (this is the voice mail number of my sim operator)
Now, let's go back a bit for earlier problem of my phone...
It's been stuck on Samsung logo(bootloop) because of EFS folder corrupted(Error mount efs)
Solution: I forced the efs to mount by enter the command in Terminal Emulator on Recovery mode, then the phone reboot normally with wifi connect but fake Imei(004999xxxxxxx) and S/N 00000000000. So, I can't make any call since then but can connect wifi.
After that with the fake Imei and S/N all zero I've finally found a mobile repair shop that can write the original Imei and S/N for me with the SPT Box. So, my phone has the original Imei and S/N now but when I try to make call it said "Not registered on network"
If I choose the network manually(My operator is DTAC) it will be Network(DTAC)unavailable... If set to choose automatically, it looks fine but when I attempt to call it said "Not registered on network" again...
The phone still can connect to WiFi, as usual... but can't make call...like before fix the Imei and S/N
Contacted the operator of my sim already and they said it seems to be the problem of the phone so, I have to contact Samsung... but my phone has no service with Samsung coz it's the phone from another country and it's been root already...
I've tried every way I can(found on this site and other site...) None work...
So... anyone has any idea why my phone can't make any call???... and HOW EXACTLY TO FIX IT???
Thank you again for you time and help...
Angel S.
666.NightAngel said:
Hello everyone,
Well, back again with the problem that can't find any solution anywhere.
I've opened a thread about fake imei on this site earlier which can find a solution already. Now the imei and the S/N become original one but the phone still can't make any call. I found the thread about a patch that can fix this issue but it works with NOTE2 and S3 only... so, I'm afraid to try that with my S4 GT-I9500 since it's very hard to find a fix for its problem... I don't want another problem for my phone now...
So, the status of the phone is unlock, root, on latest stock firmware(I9500XXUBMG1), Baseband is I9500DXUBMF8,
Software status on phone: Network=Unknown, Mobile Network Type=Edge:2, Service State=Out of service...
When I check with AndroidDump the Telephony said:
IMEI=(my original IMEI)
CallState=IDLE
DataActivity=NONE
DataState=DISCONNECTED
NetworkType=EDGE
PhoneType=GSM
SimState=READY
CellLocation=[16427,50572,-1]
DeviceSoftwareVersion=01
Line1Number= (it's blank)
NetworkCountryIso=th
NetworkOperator=52018
NetworkOperatorName= (it's blank...again)
SimCountryIso=th
SimOperator=52018
SimSerialNumber= (my sim serial number)
SubscriberId=52018961057xxxx (this is my IMSI)
VoiceMailAlphaTag=VOICEMAIL
VoiceMailNumber=1802 (this is the voice mail number of my sim operator)
Now, let's go back a bit for earlier problem of my phone...
It's been stuck on Samsung logo(bootloop) because of EFS folder corrupted(Error mount efs)
Solution: I forced the efs to mount by enter the command in Terminal Emulator on Recovery mode, then the phone reboot normally with wifi connect but fake Imei(004999xxxxxxx) and S/N 00000000000. So, I can't make any call since then but can connect wifi.
After that with the fake Imei and S/N all zero I've finally found a mobile repair shop that can write the original Imei and S/N for me with the SPT Box. So, my phone has the original Imei and S/N now but when I try to make call it said "Not registered on network"
If I choose the network manually(My operator is DTAC) it will be Network(DTAC)unavailable... If set to choose automatically, it looks fine but when I attempt to call it said "Not registered on network" again...
The phone still can connect to WiFi, as usual... but can't make call...like before fix the Imei and S/N
Contacted the operator of my sim already and they said it seems to be the problem of the phone so, I have to contact Samsung... but my phone has no service with Samsung coz it's the phone from another country and it's been root already...
I've tried every way I can(found on this site and other site...) None work...
So... anyone has any idea why my phone can't make any call???... and HOW EXACTLY TO FIX IT???
Thank you again for you time and help...
Angel S.
Click to expand...
Click to collapse
I have the same issue. Anyone help.
I have checked the IMEI was clear.
i dont know if this helps but i had the same problem ....the exact same problem you are having ,only its that i was having it on the note 2 , also i didnt have the warranty cause of the same reason as yours,so eventually i fixed it after 4 month ,
i first installed the miui rom, then flashed the dmg1 modem on my phone and used the ariza patc, i think it has to be done in the same order cause i had done all three of those before but to no result.maybe you can try this...
hope i helped
panda_ken said:
I have the same issue. Anyone help.
I have checked the IMEI was clear.
Click to expand...
Click to collapse
sorry for late reply...
after long time that I tried to fix my phone...I finally gave up... and use the tools to fix it... right now the phone can call, can connect wifi, use 3g, and be in normal state... if you still have problem with your phone please contact me in pm and leave your email to me...
Good luck
Angel S.
Nexsss1 said:
i dont know if this helps but i had the same problem ....the exact same problem you are having ,only its that i was having it on the note 2 , also i didnt have the warranty cause of the same reason as yours,so eventually i fixed it after 4 month ,
i first installed the miui rom, then flashed the dmg1 modem on my phone and used the ariza patc, i think it has to be done in the same order cause i had done all three of those before but to no result.maybe you can try this...
hope i helped
Click to expand...
Click to collapse
Thank u so much for ur advice... unfortunately...the ariza patch not work on S4. But thanks anyway...
Angel S.
s4 with Imei problem and show "Not registered on the network"
666.NightAngel said:
sorry for late reply...
after long time that I tried to fix my phone...I finally gave up... and use the tools to fix it... right now the phone can call, can connect wifi, use 3g, and be in normal state... if you still have problem with your phone please contact me in pm and leave your email to me...
Good luck
Angel S.
Click to expand...
Click to collapse
Hello!
I have the same problem as you.
Can you show how to resolve it ?
Please i need to resolve it ASAP.
Thanks for all!
fjramirez said:
Hello!
I have the same problem as you.
Can you show how to resolve it ?
Please i need to resolve it ASAP.
Thanks for all!
Click to expand...
Click to collapse
Please, contact through pm... leave your email... explain your problem... I will try my best to help you...
Best regards,
Angel S.
imei
Dear did you solve your problem of solving IMEI to make samsung s4 registered on network as i can not make call after download firmware i9500DXUBMF8
CAN ANY ONE HELP PLEASE AS SOON AS POSSIBLE
666.NightAngel said:
UPDATE!!!
30/08/2013
My phone can make call mow... back to normal state... but still have imei problem...
Anyone who wants to know how... why... or whatever... please, contact me through pm... leave your email for me...and please, explain your problem... I will try my best to help you out...
I am very busy look after my daughter...so please be patient if I reply your mail late...
Good luck to you all...
Angel S.
-----------------------------------------------------------------------------------------
"Original thread"
Hello everyone,
Well, back again with the problem that can't find any solution anywhere.
I've opened a thread about fake imei on this site earlier which can find a solution already. Now the imei and the S/N become original one but the phone still can't make any call. I found the thread about a patch that can fix this issue but it works with NOTE2 and S3 only... so, I'm afraid to try that with my S4 GT-I9500 since it's very hard to find a fix for its problem... I don't want another problem for my phone now...
So, the status of the phone is unlock, root, on latest stock firmware(I9500XXUBMG1), Baseband is I9500DXUBMF8,
Software status on phone: Network=Unknown, Mobile Network Type=Edge:2, Service State=Out of service...
When I check with AndroidDump the Telephony said:
IMEI=(my original IMEI)
CallState=IDLE
DataActivity=NONE
DataState=DISCONNECTED
NetworkType=EDGE
PhoneType=GSM
SimState=READY
CellLocation=[16427,50572,-1]
DeviceSoftwareVersion=01
Line1Number= (it's blank)
NetworkCountryIso=th
NetworkOperator=52018
NetworkOperatorName= (it's blank...again)
SimCountryIso=th
SimOperator=52018
SimSerialNumber= (my sim serial number)
SubscriberId=52018961057xxxx (this is my IMSI)
VoiceMailAlphaTag=VOICEMAIL
VoiceMailNumber=1802 (this is the voice mail number of my sim operator)
Now, let's go back a bit for earlier problem of my phone...
It's been stuck on Samsung logo(bootloop) because of EFS folder corrupted(Error mount efs)
Solution: I forced the efs to mount by enter the command in Terminal Emulator on Recovery mode, then the phone reboot normally with wifi connect but fake Imei(004999xxxxxxx) and S/N 00000000000. So, I can't make any call since then but can connect wifi.
After that with the fake Imei and S/N all zero I've finally found a mobile repair shop that can write the original Imei and S/N for me with the SPT Box. So, my phone has the original Imei and S/N now but when I try to make call it said "Not registered on network"
If I choose the network manually(My operator is DTAC) it will be Network(DTAC)unavailable... If set to choose automatically, it looks fine but when I attempt to call it said "Not registered on network" again...
The phone still can connect to WiFi, as usual... but can't make call...like before fix the Imei and S/N
Contacted the operator of my sim already and they said it seems to be the problem of the phone so, I have to contact Samsung... but my phone has no service with Samsung coz it's the phone from another country and it's been root already...
I've tried every way I can(found on this site and other site...) None work...
So... anyone has any idea why my phone can't make any call???... and HOW EXACTLY TO FIX IT???
Thank you again for you time and help...
Angel S.
Click to expand...
Click to collapse
queenystars said:
Dear did you solve your problem of solving IMEI to make samsung s4 registered on network as i can not make call after download firmware i9500DXUBMF8
CAN ANY ONE HELP PLEASE AS SOON AS POSSIBLE
Click to expand...
Click to collapse
Hello... please leave ur email in my pm.
Regards,
Angel S.
samsung s4
666.NightAngel said:
Hello... please leave ur email in my pm.
Regards,
Angel S.
Click to expand...
Click to collapse
dear i got fake IMEI
email is [email protected]
This is why you should always back up your EFS folder. If your IMEI ever gets lost you can restore using the EFS backup folder very easily.
666.NightAngel said:
UPDATE!!!
30/08/2013
My phone can make call mow... back to normal state... but still have imei problem...
Anyone who wants to know how... why... or whatever... please, contact me through pm... leave your email for me...and please, explain your problem... I will try my best to help you out...
I am very busy look after my daughter...so please be patient if I reply your mail late...
Once again... please leave your email in my pm or I will not answer your pm or post. Sorry but I can't log in here more often...
Good luck to you all...
Angel S.
-----------------------------------------------------------------------------------------
"Original thread"
Hello everyone,
Well, back again with the problem that can't find any solution anywhere.
I've opened a thread about fake imei on this site earlier which can find a solution already. Now the imei and the S/N become original one but the phone still can't make any call. I found the thread about a patch that can fix this issue but it works with NOTE2 and S3 only... so, I'm afraid to try that with my S4 GT-I9500 since it's very hard to find a fix for its problem... I don't want another problem for my phone now...
So, the status of the phone is unlock, root, on latest stock firmware(I9500XXUBMG1), Baseband is I9500DXUBMF8,
Software status on phone: Network=Unknown, Mobile Network Type=Edge:2, Service State=Out of service...
When I check with AndroidDump the Telephony said:
IMEI=(my original IMEI)
CallState=IDLE
DataActivity=NONE
DataState=DISCONNECTED
NetworkType=EDGE
PhoneType=GSM
SimState=READY
CellLocation=[16427,50572,-1]
DeviceSoftwareVersion=01
Line1Number= (it's blank)
NetworkCountryIso=th
NetworkOperator=52018
NetworkOperatorName= (it's blank...again)
SimCountryIso=th
SimOperator=52018
SimSerialNumber= (my sim serial number)
SubscriberId=52018961057xxxx (this is my IMSI)
VoiceMailAlphaTag=VOICEMAIL
VoiceMailNumber=1802 (this is the voice mail number of my sim operator)
Now, let's go back a bit for earlier problem of my phone...
It's been stuck on Samsung logo(bootloop) because of EFS folder corrupted(Error mount efs)
Solution: I forced the efs to mount by enter the command in Terminal Emulator on Recovery mode, then the phone reboot normally with wifi connect but fake Imei(004999xxxxxxx) and S/N 00000000000. So, I can't make any call since then but can connect wifi.
After that with the fake Imei and S/N all zero I've finally found a mobile repair shop that can write the original Imei and S/N for me with the SPT Box. So, my phone has the original Imei and S/N now but when I try to make call it said "Not registered on network"
If I choose the network manually(My operator is DTAC) it will be Network(DTAC)unavailable... If set to choose automatically, it looks fine but when I attempt to call it said "Not registered on network" again...
The phone still can connect to WiFi, as usual... but can't make call...like before fix the Imei and S/N
Contacted the operator of my sim already and they said it seems to be the problem of the phone so, I have to contact Samsung... but my phone has no service with Samsung coz it's the phone from another country and it's been root already...
I've tried every way I can(found on this site and other site...) None work...
So... anyone has any idea why my phone can't make any call???... and HOW EXACTLY TO FIX IT???
Thank you again for you time and help...
Angel S.
Click to expand...
Click to collapse
i have a same problem with this..
please help me.
[email protected]
Pls give me details for fix this problem
666.NightAngel said:
sorry for late reply...
after long time that I tried to fix my phone...I finally gave up... and use the tools to fix it... right now the phone can call, can connect wifi, use 3g, and be in normal state... if you still have problem with your phone please contact me in pm and leave your email to me...
Good luck
Angel S.
Click to expand...
Click to collapse
Hi there i have same problem and pls send me solution..
My email: [email protected]
Thanks.
If you can help me. I had the same error.
My email
[email protected]
Thanks!
Cannot Register To Network
Hi,
I am facing the same issue, can anyone please help me out ? I cannot register to network but my data services are working.
Strange
Regards
Please help me
I also have the same problem
Stock rom
Correct IMEI
NOT REGISTERED ON NETWORK :crying:
WITHOUT NOTICE, THE NETWORK ISSUE BEGAN. How did you get your calls and data back? Please help. My email is [email protected]
Greetings.
means that your phone imei has been reported stolen to some mobilephone companies.
Sent from my GT-N7100 using xda app-developers app
I think i solved this!!!
ehe12 said:
means that your phone imei has been reported stolen to some mobilephone companies.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
You were ABSOLUTELY right. I had done NOTHING wrong, my IMEI had been blacklisted by a weird mistake of a mobile company.
I'll explain my jourey, in the hopes that it can help somebody, since, I HAVE A SOLUTION for every single case of this issue.
1) When I got my gt-i9500, of course I rooted it, then i proceeed to flash PAC-ROM on it, but I had to go back to Stock (Arrow Modified Version) since PAC-ROM is FULL of glitches ans bugs.
2) After a week of being using ARROW, i got the "NOT REGISTERED ON NETWORK" problem. Not instantly, no, AFTER A WEEK OF USING AS MY DEFAULT ROM. I got really scared, since I DIDN'T MAKE A BACKUP OF MY EFS FOLDER, and when I review my IMEI, it wasn't even the 00049... generic one, it was null/null. So i shat my pants, thinking I had ruined my S4 for good. But I started reading. First i had to get my IMEI back to its original form, and then work around the network issue (THAT'S THE ORDER, ACTUALLY)
3) So I downloaded a whole bunch of modems and tried one after one, with no success, some of them put the generic IMEI on my phone, some of them got my IMEI back to null/null. I was worried and drinking industrial quantities of wine at this point. So i went for the obvious but way more boring solution. I TRIED FLASHING STOCK ROMS on my S4. I live in Perú, so I only have 2 choices to do this, and actually my carrier stock rom is not even listed on SamMobile.com (I'm on Nextel Peruvian 3G network). The 2 choices i tried, neither got my signal or my IMEI BACK. I started going desperate, but keept on reading.
4) Tried the MTK Droid Tools to recover my IMEI. I had never even used The ADB android interface before, but learned rather quickly. Got my S4 connected, shell rooted, and still couldn't change my IMEI; since MTK Droid Tools (and please trust me on this one) ONLY WORKS FOR THE CHINESSE/KOREAN VERSIONS OF THE S4. So don't even bother, you might learn ALOT about the android ADB interface, but won't fix your IMEI.
5) Finally I started downloading a bunch of Stock roms in order to get my IMEI fixed automaticaly by flashing them through ODIN. And the I stumble upon THIS ROM: http://www.sammobile.com/firmwares/3/?download=17396 WHICH SEEMED like a divine answer from heaven since, just by flashing it, got me back my ORIGINAL IMEI.
6) At this point i had discovered that INDEED the MODEM: I9500UBUBMG9 does get your IMEI back to its original state. (That's your answer). SO, I was in a Stock rom, with my original IMEI, bu had NO FREAKING SIGNAL WHAT SO EVER. STILL HAD THE "Not registered on network" FREAKING problem. So I, finally, gave up, came here, and got the answer that It might had to do with my IMEI being blacklisted. I refused to believe so, since there are this stories on the internet, that you can actually screw your EFS folder by installing a custom AOKP rom without backing it up, and that there's this "RF CAL" file that only samsung knows how to fix and once it's corrupted, you won't be able to connect to any network, ever. BUT HERE'S THE THING, THAT story IS A LIE.
7) I went to NEXTEL (My carrrier) support (They sold me the phone) today, and YES, OMG YES, my IMEI had been blacklisted, AND HERE'S THE CATCH: ANYONE (At least that can happen in my country) ANYONE, can call your mobile operator, reporting your phone has been stolen, and the op will block NOT ONLY YOUR NUMBER, but your freakining IMEI, blacklisting it, and making it IMPOSIBLE for you to get connected on ANY network.
SO Here is my conclussion to this WEIRD case:
1) If you have the NOT REGISTERED ON NETWORK and you have the WRONG IMEI issue (Meaning, your IMEI is the generic: 00049... or Null/Null) , flash via ODIN, THIS STOCK ROM: http://www.sammobile.com/firmwares/3/?download=17396, just... flash it, I DON'T CARE IF YOU'VE READ THAT YOU JUST NEED THE MODEM, I garantee that if you flash this stock rom, your IMEI will go back to its original state.
2) If your S4 is on an Stock Rom, and you have your original IMEI; and you still can't connect to your network, It means your original imei has been blacklisted, and you NEED to talk to sammy or your carrier to fix this, or contact someone who can undo this situation.
That's it. I hope that my journey helps someone that is trying to get this "NOT REGISTERED ON NETWORK" issue solved, as I've been trying to for the entire weekend. Just... don't give up. http://forum.xda-developers.com/images/smilies/good.gif
gadhafy said:
You were ABSOLUTELY right. I had done NOTHING wrong, my IMEI had been blacklisted by a weird mistake of a mobile company.
I'll explain my jourey, in the hopes that it can help somebody, since, I HAVE A SOLUTION for every single case of this issue.
1) When I got my gt-i9500, of course I rooted it, then i proceeed to flash PAC-ROM on it, but I had to go back to Stock (Arrow Modified Version) since PAC-ROM is FULL of glitches ans bugs.
2) After a week of being using ARROW, i got the "NOT REGISTERED ON NETWORK" problem. Not instantly, no, AFTER A WEEK OF USING AS MY DEFAULT ROM. I got really scared, since I DIDN'T MAKE A BACKUP OF MY EFS FOLDER, and when I review my IMEI, it wasn't even the 00049... generic one, it was null/null. So i shat my pants, thinking I had ruined my S4 for good. But I started reading. First i had to get my IMEI back to its original form, and then work around the network issue (THAT'S THE ORDER, ACTUALLY)
3) So I downloaded a whole bunch of modems and tried one after one, with no success, some of them put the generic IMEI on my phone, some of them got my IMEI back to null/null. I was worried and drinking industrial quantities of wine at this point. So i went for the obvious but way more boring solution. I TRIED FLASHING STOCK ROMS on my S4. I live in Perú, so I only have 2 choices to do this, and actually my carrier stock rom is not even listed on SamMobile.com (I'm on Nextel Peruvian 3G network). The 2 choices i tried, neither got my signal or my IMEI BACK. I started going desperate, but keept on reading.
4) Tried the MTK Droid Tools to recover my IMEI. I had never even used The ADB android interface before, but learned rather quickly. Got my S4 connected, shell rooted, and still couldn't change my IMEI; since MTK Droid Tools (and please trust me on this one) ONLY WORKS FOR THE CHINESSE/KOREAN VERSIONS OF THE S4. So don't even bother, you might learn ALOT about the android ADB interface, but won't fix your IMEI.
5) Finally I started downloading a bunch of Stock roms in order to get my IMEI fixed automaticaly by flashing them through ODIN. And the I stumble upon THIS ROM: http://www.sammobile.com/firmwares/3/?download=17396 WHICH SEEMED like a divine answer from heaven since, just by flashing it, got me back my ORIGINAL IMEI.
6) At this point i had discovered that INDEED the MODEM: I9500UBUBMG9 does get your IMEI back to its original state. (That's your answer). SO, I was in a Stock rom, with my original IMEI, bu had NO FREAKING SIGNAL WHAT SO EVER. STILL HAD THE "Not registered on network" FREAKING problem. So I, finally, gave up, came here, and got the answer that It might had to do with my IMEI being blacklisted. I refused to believe so, since there are this stories on the internet, that you can actually screw your EFS folder by installing a custom AOKP rom without backing it up, and that there's this "RF CAL" file that only samsung knows how to fix and once it's corrupted, you won't be able to connect to any network, ever. BUT HERE'S THE THING, THAT story IS A LIE.
7) I went to NEXTEL (My carrrier) support (They sold me the phone) today, and YES, OMG YES, my IMEI had been blacklisted, AND HERE'S THE CATCH: ANYONE (At least that can happen in my country) ANYONE, can call your mobile operator, reporting your phone has been stolen, and the op will block NOT ONLY YOUR NUMBER, but your freakining IMEI, blacklisting it, and making it IMPOSIBLE for you to get connected on ANY network.
SO Here is my conclussion to this WEIRD case:
1) If you have the NOT REGISTERED ON NETWORK and you have the WRONG IMEI issue (Meaning, your IMEI is the generic: 00049... or Null/Null) , flash via ODIN, THIS STOCK ROM: http://www.sammobile.com/firmwares/3/?download=17396, just... flash it, I DON'T CARE IF YOU'VE READ THAT YOU JUST NEED THE MODEM, I garantee that if you flash this stock rom, your IMEI will go back to its original state.
2) If your S4 is on an Stock Rom, and you have your original IMEI; and you still can't connect to your network, It means your original imei has been blacklisted, and you NEED to talk to sammy or your carrier to fix this, or contact someone who can undo this situation.
That's it. I hope that my journey helps someone that is trying to get this "NOT REGISTERED ON NETWORK" issue solved, as I've been trying to for the entire weekend. Just... don't give up. http://forum.xda-developers.com/images/smilies/good.gif
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it's so amazing that the mobile company staff have so much power, isn't it? I thought the report process should be a bit more formal, with a note from the policeman or something. Otherwise it's so easy to get fxxked up for doing nothing...
IMEI prob
.Im totally lost! I lost my IMEI when i check it says 004999...... thats a fake IMEI! and i cant call anyone or message or whatsapp anyone! My email is [email protected] . Really really need your help!
666.NightAngel said:
Please, contact through pm... leave your email... explain your problem... I will try my best to help you...
Best regards,
Angel S.
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[Q] Help my G900H (IMEI 0049&Not registered on network)

Hello, anyone who may concerns. I got a serious problem with my G900H and I cannot solve... Who might help me? This is the first time I use the Samsung phone and I have known it is very important to back up my EFS and I did it with a tool called Samsung tool. I just installed it and pressed the button for backing up to the internal storage. However, I cannot find the back-up so I considered it is useless. Then I uninstalled it and it is after I unloaded it, **** happened... Once I dial a number, a sentence ' Not registered on network' will come up. I do not know why and I restore factory settings, which is proved to be useless. Then I flashed a stock ROM by Odin and expected it will be better. However, the problem still persists and even I lost my IMEI, which turned to be '00499901.....' After that, I tried some other ROMs, the problem still has not be solved. Everything goes well but this. I wonder some smart guys may help me. Thank you very very much!
( I am not a English speaker, forgive my pool English)
Hi. It's a shot in the dark but look up a tool called Samsung Tool version 16.7. It claims to assist in resetting your IMEI to the original version as per the code on your battery cover. No promises, but it's worth a try.
Sent from my SM-G900H using XDA Free mobile app

My imei & baseband went missing after installing a rom. Now i have no mobile network

My imei & baseband went missing after installing a rom. Now i have no mobile network
Hello everyone Happy Holidays i know all us get some kind of technical issue now and then and as far as im concern this isnt the first time someone else has a problem identical to mine which is having a missing imei and baseband resulting in my Samsung Galaxy Note 4 T Mobile popping up a message saying "no mobile network" everytime i try to make a call due to me flashing a new rom. So i dont think there will be a problem if anybody who knows enough about this subject answers how they were able to solve this problem they had.
brunorockstar1997 said:
Hello everyone Happy Holidays i know all us get some kind of technical issue now and then and as far as im concern this isnt the first time someone else has a problem identical to mine which is having a missing imei and baseband resulting in my Samsung Galaxy Note 4 T Mobile popping up a message saying "no mobile network" everytime i try to make a call due to me flashing a new rom. So i dont think there will be a problem if anybody who knows enough about this subject answers how they were able to solve this problem they had.
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Usually a result of corrupted efs folder. You just need to restore this folder from a previous backup and you should be good to go.
You should always, always, always, ALWAYS backup your efs folder no matter what device you have. It's a very improbable thing to happen to get this error, but when it does happen it's a pain to get it back and running without a backup of the efs data.
If you do not have this backed up, the only suggestion would be to take it to a repair center if available.
brunorockstar1997 said:
Hello everyone Happy Holidays i know all us get some kind of technical issue now and then and as far as im concern this isnt the first time someone else has a problem identical to mine which is having a missing imei and baseband resulting in my Samsung Galaxy Note 4 T Mobile popping up a message saying "no mobile network" everytime i try to make a call due to me flashing a new rom. So i dont think there will be a problem if anybody who knows enough about this subject answers how they were able to solve this problem they had.
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try to flash 6.0.1 stock firmware from odin see if it bring back your baseband&imei back.
Go to settings/about device/ and take a screenshots and upload it maybe i can help to fix
No need to solve that problem anymore
I just installed a new rom called batman rom s8 plus ofr n4 port 7 or something like that and now i have Lte and i can make calls without any problem. Thanks for trying to help anyway
ShaDisNX255 said:
Usually a result of corrupted efs folder. You just need to restore this folder from a previous backup and you should be good to go.
You should always, always, always, ALWAYS backup your efs folder no matter what device you have. It's a very improbable thing to happen to get this error, but when it does happen it's a pain to get it back and running without a backup of the efs data.
If you do not have this backed up, the only suggestion would be to take it to a repair center if available.
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I really appreciate you being a good fellow and trying to help me out but i already solved the problem my installing a new rom. I did restore my Efs back up with Twrp by the way but that didnt help the only thing left was to use octoplus but i found another way around it ?
Just be careful, I used to own a Galaxy Note 1 and it would temporarly fix my problem just flashing stock, but after a few days it went bad again. I never was able to fix it so I gave it to my little sister as a tablet lol

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