Hi all, I bought a new Galaxy Note II overseas in Malaysia in February. It is an original set fully network unlocked. I have tried using Vodafone New Zealand SIM card in it but to no avail. I tried flashing new modems and stock firmwares, ariza patch, backup and restore IMEI before and after flashing. My serial numbers and IMEI numbers are still the same and are matching to what is on the box.
If I insert a Malaysian SIM card it works on roaming mode since I am back in NZ, however if I insert a NZ SIM card and try to connect to the local network it says 'Unable to connect,' calling and messaging only results in 'Not registered to network.' And it only allows me to make emergency calls. My firmware is XXDMB2, baseband is ariza, kernel is Perseus.
I would be grateful for any help.
mark.r22 said:
Hi all, I bought a new Galaxy Note II overseas in Malaysia in February. It is an original set fully network unlocked. I have tried using Vodafone New Zealand SIM card in it but to no avail. I tried flashing new modems and stock firmwares, ariza patch, backup and restore IMEI before and after flashing. My serial numbers and IMEI numbers are still the same and are matching to what is on the box.
If I insert a Malaysian SIM card it works on roaming mode since I am back in NZ, however if I insert a NZ SIM card and try to connect to the local network it says 'Unable to connect,' calling and messaging only results in 'Not registered to network.' And it only allows me to make emergency calls. My firmware is XXDMB2, baseband is ariza, kernel is Perseus.
I would be grateful for any help.
Click to expand...
Click to collapse
Have you checked the Mayalsian phone model supports NZ operator frequencies?
pjfriend said:
Have you checked the Mayalsian phone model supports NZ operator frequencies?
Click to expand...
Click to collapse
Sorry, I forgot to mention that this is an International N7100 and I am getting full signal here in NZ using Nz sim card
Sent from my GT-N7100 using xda app-developers app
Just a sugestion to you, root the phone or install a pre-rooted ROM from drketan and then install Galaxy SIM Unlock to check and be sure that the phone is fully network unlocked and also not SIM restricted.
To check the SIM restriction make sure that under Details -Accepted MCC/MNC - it is writen "all" and not some numbers like 5021x were x can be any number.
Under the next line I expect your phone to have Network Lock -unlocked, because you could use any SIM and make SOS calls, but if the above line is showing some numbers instead of "all" that might be your problem.
It is worth checking this because the aplication is free to check the status of the locking.
My new Note 2 was locked, I got the official unlock code from my carrier, entered the unlock code, the Network Lock was showing as unlocked but the SIM restriction status was still showing as locked to my carrier , under Accepted MCC/MNC I had my operator network code instead of "all".
I paid 3 euro and unlocked my phone fully with the Galaxy SIM Unlock, small price for a full unlock if your phone is rooted.
Good luck
Hi mendo, thanks for the suggestion. I ran galaxsim and I will post a screenshot. I am leaning towards the serial number being generic 0. Flashing Dr Ketans rom didnt help but thanks for the advice.
Sent from my GT-N7100 using xda app-developers app
mark.r22 said:
Hi mendo, thanks for the suggestion. I ran galaxsim and I will post a screenshot. I am leaning towards the serial number being generic 0. Flashing Dr Ketans rom didnt help but thanks for the advice.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
The Serial Number is showing 000000000000 on mine as well, this is not an issue it must be a bug in the tool.
Use some other tool or in Settings- About Device - Staus - Serial Number to display the S/N if you want to make sure that it is the same with the one from the box.
The Product Code should be GT-N7100xxxyyy, where xxx is the HW version and yyy is the CSC (country sales code) for the country/carrier.
This Not Active product code, could be the result of your problem and it might signal that your nv_data.bin and md5 files don't match.
I found an old post for a Galaxy S phone where changing the phone code or modifing the nv_data.bin is an issue and the SIM won't register.
I am sure that there are more topics about this but I'll post the link for the Galaxy S issue where you can start investigating more.
http://forum.xda-developers.com/showthread.php?t=780509
The rest looks OK and your phone looks fully unlocked.
Here is a N7100 topic about the product code.
http://forum.xda-developers.com/showthread.php?t=2045278
tried galaxy s/s2/s3 csc changertried galaxy s/s2/s3 csc changerCheck Fus is the only apk that will show the product code of your device with no need for root.
Unfortunately the apk doesn't work for the original purpose but at least it reads your product code.
Also it looks that the md5 checksum file is not autogenerating anymore if you edited the nv_data.bin and deleted the md5 file.
You need to restore the original bin and md5 file from an original efs backup.
I've just noticed that in your product code I can still see the CSC code as BTU.
Here is some info on the CSC and a free tool right at the end of the post if you need to change it, but it needs root and it will wipe your phone.
The apk is "galaxy s/s2/s3 csc changer".
http://droidviews.com/2012/how-to-change-csc-in-samsung-galaxy-phones/
Good luck, but I think you are in trouble and maybe only Samsung official service might be your salvation.
Wipe your root and install an official ROM before sending it to Samsung with the "product code missing" fault.
You may wish to hide the imei number as that is the one unique number that gives your phone an identity.
Sent from my GT-N7105 using xda premium
Product code is not active no matter what. I edited the nv_data.bin, made a backup of it, and did not delete the md5 file. I'll restore it and send it to Samsung service center. Thanks for the help brother, would've donated if possible but I'm a broke uni student
http://forum.xda-developers.com/showthread.php?t=2045278
Editing the nv_data.bin will make the md5 original file useless because the checksum is different and you can't generate a valid md5 file anymore to match a modiffied nv_data.bin file.
Copying/Restoring the original nv_data.bin and original md5 files from a backup and set the permissions right, as in the Galaxy S topic might help.
Hello, did you solve your problem? I'm facing a similar issue with my N7100, I got the same message not registered on network and my sim isn't recognized. How did you fix it?
my IMEI is correct, I got exactly this problem
thnaks for help
Related
This method has been sent to me by android235, I can not personally attest that it is working so please if you do that, make sure you have a backup or odin to reinstall your phone
After root, use a file explorer.
I use the ES File Explorer downloaded from the market:
- Launch it
- Goto "Settings> File Settings". Be sure that Show hidden files is checked
- Also be sure is checked "Settings > Root Explorer"
- In "Settings > Home directory" write "/" (without the quotes)
explore the "efs" folder in the root
- move the following files in a backup folder somewhere to your internal SD card (you will need them if you want to restore later to original phone setup) : .nv_core.bak, .nv_core.bak.md5, .nv_data.bak, .nv_data.bak.md5, nv_data.bin, nv_data.bin.md5. Moving them they will be deleted from the efs folder (that's ok).
Reboot.
Now you will have it unlocked but with the generic IMEI.
Peace out.
Click to expand...
Click to collapse
All credit go to him and please don't forget to thanks him!
Any way to restore the IMEI afterwards? Or is the simlock check based on the IMEI?
Zhenech said:
Any way to restore the IMEI afterwards? Or is the simlock check based on the IMEI?
Click to expand...
Click to collapse
I suppose the files you saved are to restore if needed, for the rest I don't know as like I said did NOT try myself
Nah. I meant whether it is possible to restore IMEI while still having unlock. If I restore the files, the lock should be back. (My glide is unlocked, but thats not the point)
Sent from my SAMSUNG-SGH-I927R using XDA
I'd rather spend 25$ for an unlock key on Americanunlocker.com
(worked great for me)
In fact, I have tried to hack the nv_data.bin but seems that it is not the same as galaxy SII and galaxy S.
Although you will get unlocked (generic IMEI) when removed those files,
I highly recommand that you have to backup them in a very safe place. Otherwise if you encounter any problems, you have to sent back to AT&T / Rogers.
Sent from my SAMSUNG-SGH-I927R using XDA
The method will work.. i had tested it earlier.. a generic imei will be assigned..
however some operators do not accept generic IMEI..
Update: Previous posts
Please go through posts 16 to 18 on http://forum.xda-developers.com/showthread.php?t=1416569&page=2
This method is perfect ! My phone accept the Free Mobile's SIM card and is recognized by Orange and Free Mobile's networks.
(It connects too on the two another french carriers when theses networks are too low, I don't know why and if the reason is the AT&T ROM or the unlock method. By the way, although I am connected I can't do anything.)
i don't like having a genric IMEI. will wait for anther method or just pay for an unlock key (when i get my device ofcurse )
What do you mean by generic IMEI? Is it all 0s? Does this mean that it will no longer be detected as a smartphone?
I just tried this method and it did work for me thank u
one Q is there any way to fix genric IMEI and keep unlock .
Edit: I restore my files from a back up and relock the phone ..went to ebay bought unlock code for about 8 dollars ..Done
sam.assad said:
I just tried this method and it did work for me thank u
one Q is there any way to fix genric IMEI and keep unlock .
Edit: I restore my files from a back up and relock the phone ..went to ebay bought unlock code for about 8 dollars ..Done
Click to expand...
Click to collapse
I've done the same thing with another website -more expensive x-( (Fastgsm.com), although it worked.
The only problem though is that every now and then the phone asks me again for the network unlock code. This has forced me to carry a text message with the info on the phone. So far it has asked me 3 times the unlock code. Every time I input the same code received, every time it accepts it and gets unlocked. But I think this is strange, this is the first phone I had that this happens.
sigiloso said:
I've done the same thing with another website -more expensive x-( (Fastgsm.com), although it worked.
The only problem though is that every now and then the phone asks me again for the network unlock code. This has forced me to carry a text message with the info on the phone. So far it has asked me 3 times the unlock code. Every time I input the same code received, every time it accepts it and gets unlocked. But I think this is strange, this is the first phone I had that this happens.
Click to expand...
Click to collapse
Maybe the ICS Update will fix this issue.
sigiloso said:
I've done the same thing with another website -more expensive x-( (Fastgsm.com), although it worked.
The only problem though is that every now and then the phone asks me again for the network unlock code. This has forced me to carry a text message with the info on the phone. So far it has asked me 3 times the unlock code. Every time I input the same code received, every time it accepts it and gets unlocked. But I think this is strange, this is the first phone I had that this happens.
Click to expand...
Click to collapse
Having the same problem here! It seems this is a Samsung issue. Very annoying - GRRRR!!!
sam.assad said:
I just tried this method and it did work for me thank u
one Q is there any way to fix genric IMEI and keep unlock .
Edit: I restore my files from a back up and relock the phone ..went to ebay bought unlock code for about 8 dollars ..Done
Click to expand...
Click to collapse
Can you provide me with the ebay seller. I have a Rogers I927R which is locked to network.
petard said:
What do you mean by generic IMEI? Is it all 0s? Does this mean that it will no longer be detected as a smartphone?
Click to expand...
Click to collapse
I lost my backed up copy of nv_data.bin as my sd card is corrupted I am on a rogers captivate. Is there anyway to recover the IMEI as Straight Talk now complains that this device is locked from using network
Well, I found the following thread (http://forum.xda-developers.com/showthread.php?t=881162) but need the values for these lines so I can update my nv_data.bin.
00188008
00188010
00188020
Can one of you help me out?
Thanks,
Captivate or captivate glide?
phatryan69 said:
Captivate or captivate glide?
Click to expand...
Click to collapse
Captivate Glide (Rogers version I927R).
I'm very interested in this thread since i'm french, and about to buy a phone in the US to use it here, in France.
If i understand well, the trick for unlocking it by file deletion is a bad idea since generic IMEI are not too well accepted on french networks, and when you buy an unlock code, it keeps prompting you sometimes.
My other option is the myTouch 4G Slide, so i'd probably better go for it
Ninj said:
I'm very interested in this thread since i'm french, and about to buy a phone in the US to use it here, in France.
If i understand well, the trick for unlocking it by file deletion is a bad idea since generic IMEI are not too well accepted on french networks, and when you buy an unlock code, it keeps prompting you sometimes.
My other option is the myTouch 4G Slide, so i'd probably better go for it
Click to expand...
Click to collapse
you can unlock mytouch 4G Slide easy, but be warned some models have issues with wifi not being able to turn on unless on carrier rom. i know because i have one.
I have been having major issues with my Note 2 (i317M), I flashed the Saurom on my note but returned to stock after many of the functionality was broken. After I went to stock I noticed a few issues. The first being I can no longer connect to my mobile network without entering custom APN settings which I never had to do before. The second being there are a bunch of extra bloatware on my home screen for example: "100% HD Games", "GPS navigate", "Mobile TV", and "Self serve." The third is I can no longer send picture messages (MMS). I am hoping someone can help me resolve my issues.
That looks like Bell's bloat. I (think) the Canadian ROM's are all the same, you just have to change your CSC back to Telus.
When I go to the custom Odin mode the product name says SGH-I317M_NA_BWC. Now I know BWC is Bell's code and Telus' is TLS. Where would I be able to find a Telus csc and will this fix my issues with my network?
The Telus CSC is already in the stock ROM but it defaults to Bell. You can change your sales code back to Telus by taking note of your IMEI number, then going into the dialer and entering: *#272*YOUR IMEI# Then select TLS.
Note, this will factory reset your phone.
Thank you so much!! My phone is operating properly now. My network is displaying properly again (4g instead of H/H+), all the bloatware is gone, and my network connected immediately!!!
kcaz said:
The Telus CSC is already in the stock ROM but it defaults to Bell. You can change your sales code back to Telus by taking note of your IMEI number, then going into the dialer and entering: *#272*YOUR IMEI# Then select TLS.
Note, this will factory reset your phone.
Click to expand...
Click to collapse
it says "connection problem or invalid MMI code"... do you know what that is all about. thanks
Why its not working for you
Ayiko said:
it says "connection problem or invalid MMI code"... do you know what that is all about. thanks[/QUOTE
*#272*YOUR IMEI#* forgot the star after #
Click to expand...
Click to collapse
need help
hi I have the same issue right now my wife was trying to flash a rom well she didn't like it and went back to stock now she has no network it is shows that she has a full memory even tho she has 11 Gb free internal and earlier she had those same bloatwares but then she tried to install the firewall again and now she doesn't have non but the phone is with rogers so ...... does someone has any idea what should i do ?
Preface: I'm old man and this is my first post feeling exhausted after reading topics I don't fully understand. Please bear with me.
My trusty old Note 2 has had some issues that made me to look for a replacement Note 2 (I spare you for the reasons why still Note 2). Few days ago I won an eBay auction and received an unlocked GT-N7100 supposed to be new.
The very first I did was install of Phone Info Samsung app. This app told my new phone was rooted and Firmware region was Hong Kong. I did a test phone call to my friend: OK, worked normal. Then I took several screenshots of Phone Info's reports, and did the same on my old Note 2 for comparison.
My main concern was to unroot this phone to ensure some for me essential apps would function on it after migration from my old Note 2. I followed online guide and successfully flashed with the H-K firmware N7100ZSUFNJ2. I understood this same region version was required but later I could flash firmware of my choice, the same Nordic I have on my old.
After reboot I tried to make phone call: Not registered on network. I thought first this problem appeared because of firmware and downloaded and flashed Nordic N7100XXSFQA1: the same network problem. The SIM card is the same I use on my old Note 2. More search led me to this possible solution: "How to fix not registered on network" (https://forum.xda-developers.com/showthread.php?t=2745274)
Unfortunately flashing MODEM.tar.md5 didn't solve my problem. So far I had not paid attention to the different IMEI on the label vs dialing *#06# / displayed by Phone Info. This different IMEI was the same before my unrooting process. How come I could make phone call despite this error, it's beyond me?
Another issue on this new phone is that when S-Pen is inserted it claims pen is detached, and when pulled out the S-note won't appear. How come, can be solved?
Please experts, help me to solve this problem. I am ready to supply more info if required.
MarSal53
First thing I recommend is booting into download mode to confirm the model number. Download will show the actual model number.
audit13 said:
First thing I recommend is booting into download mode to confirm the model number. Download will show the actual model number.
Click to expand...
Click to collapse
You mean this: GT-N7100, it's product name? First line under Odin mode
Did you try flashing the latest gt-n7100 rom for Hong Kong since that is the firmware that came with the phone?
audit13 said:
Did you try flashing the latest gt-n7100 rom for Hong Kong since that is the firmware that came with the phone?
Click to expand...
Click to collapse
Yes, I did successfully.
The latest ROM I see for Hong Kong is qa2: https://www.sammobile.com/firmwares/galaxy-note-/GT-N7100/TGY/download/N7100ZSSFQA2/126556/
audit13 said:
The latest ROM I see for Hong Kong is qa2: https://www.sammobile.com/firmwares/galaxy-note-/GT-N7100/TGY/download/N7100ZSSFQA2/126556/
Click to expand...
Click to collapse
I understood the firmware version should be the same in order to unroot successfully. Right now downloading the linked version. Thank so far.
After flashing with linked FW
So I downloaded the file you linked to. Here are screenshots of Phone INFO, on the left before any flashing, on the right after this latest. Need for any other screens?
The bootloader on the left is older at nj2 mixed with qa2. Weird that there is no CSC information.
The picture on the right is more consistently qa2.
The phone you purchased was definitely not new as the IMEI from the dialler should match the IMEI on the phone's printed label.
If flashing the latest firmware doesn't solve the calling issue, not sure what else to suggest other than trying firmware for a different country or a custom ROM.
audit13 said:
The bootloader on the left is older at nj2 mixed with qa2. Weird that there is no CSC information.
The picture on the right is more consistently qa2.
The phone you purchased was definitely not new as the IMEI from the dialler should match the IMEI on the phone's printed label.
If flashing the latest firmware doesn't solve the calling issue, not sure what else to suggest other than trying firmware for a different country or a custom ROM.
Click to expand...
Click to collapse
You asked for CSC info, well here three screenshots. On the left my eBay Note 2 initially, the red in middle is my own Note 2, and on the right eBay after all flashing so far.
EDIT: I forgot to insert SIM on ebay Note2 before screenshot. When inserted the MobileOperator reads elisa / 24405. Interesting, the "24421" missing. Saunalahti was subsidiary of elisa, now merged to main company.
I've read that the differing IMEI issue can be cause if you flashed firmware that contains a lower version modem than what you already had. You can try flashing the latest bootloader and modem for this device with Odin (download in this post). Extract the .rar file and place the file starting with BL in the BL tab and CP in the CP tab in Odin.
h_maharaj said:
I've read that the differing IMEI issue can be cause if you flashed firmware that contains a lower version modem than what you already had. You can try flashing the latest bootloader and modem for this device with Odin (download in this post). Extract the .rar file and place the file starting with BL in the BL tab and CP in the CP tab in Odin.
Click to expand...
Click to collapse
I followed your suggestion and flashed but unfortunately this did not solve my network problem.
The CSC changed to Hong Kong because that's what was in the rom you flashed.
MarSal53 said:
I followed your suggestion and flashed but unfortunately this did not solve my network problem.
Click to expand...
Click to collapse
Try flashing the latest firmware for Nordic region: https://updato.com/firmware-archive-select-model?record=9354FAC415BF11E7963AFA163EE8F90B
audit13 said:
The CSC changed to Hong Kong because that's what was in the rom you flashed.
Click to expand...
Click to collapse
What puzzles me is that this eBay Note before unrooting gave empty fields on Firmware's CSC Code and CSC Country. I'm here flashing the Nordic ROM back again.
h_maharaj said:
Try flashing the latest firmware for Nordic region: https://updato.com/firmware-archive-select-model?record=9354FAC415BF11E7963AFA163EE8F90B
Click to expand...
Click to collapse
Thank you for this, but again after flashing network problem stays. Well, it's midnight here in Helsinki, had to go to bed....
After flashing a stock ROM, are you able to try other sim cards in the phone?
Search result on tampered IMEI
Curious as I am I tested the IMEI displayed by dialing *#06# on three databases. One couldn't tell, two others told this phone were Ericson A3618s. Wow!
On the other hand, Phone INFO's General claims this Note 2 were White while in reality Titanium grey.
Have you made any further progress?
Is it possible that the imei on the battery label has been blacklisted which is why the motherboard was programmed with another imei?
Try entering both imei numbers here: https://www.mobileincanada.com/
audit13 said:
Have you made any further progress?
Is it possible that the imei on the battery label has been blacklisted which is why the motherboard was programmed with another imei?
Try entering both imei numbers here: https://www.mobileincanada.com/
Click to expand...
Click to collapse
Thanks for caring about this problem still. The Canadian site looks more about unlocking. My previous post told about search result from http://www.imeipro.info/ stating the imei on label is clean. I just re-visited another database for second time http://www.imei.info and there I had to pay for Black list check which takes up to 48 hours.
BTW I have kept eye on eBay and wonder how Note 2s are flooding there... Although the seller won't accept returns I wrote request to return in hope eBay takes this as resolution... have to wait a couple of days before that process may start.
Hello
I bought a used s9 a few months back. It had dual sim. In "about phone" it said G960F and was on android 9. A few days ago, I wanted to flash android 10 so I downloaded firmware for G960F, booted my phone in download mode and SURPRISE. The whole thing was in Korean and of course it was a G960N model. So I downloaded firmware for G960N this time and flashed it. Everything went perfect but when the phone booted up, It had no sim service.
I've tried everything I've found on the forums so far related to emergency calls only or no sim service.
Any kind of help would be appreciated. I have no sim service for 5 days now.
Things I've tried so far:
Flashing my phone again with android 9 stock firmware, which I can't do anymore as I've updated the bootloader lol.
Flashing custom roms
Changing csc from SKC to KOO
Flashing OXM CSC as I live in Pakistan
Flashing different modems and basebands
Nothing worked
Try flashing back a G960F android 10 firmware.
LR7875 said:
Try flashing back a G960F android 10 firmware.
Click to expand...
Click to collapse
How can I do that? I always get a PIT error.
What if you don't flash the pit file?
⁴
LR7875 said:
What if you don't flash the pit f
Click to expand...
Click to collapse
LR7875 said:
What if you don't flash the pit file?
Click to expand...
Click to collapse
Remove the pit file from csc folder?
Maybe
LR7875 said:
Maybe
Click to expand...
Click to collapse
Now I'm getting a bootloader error. Tried skipping BL but odin gave me radio error this time
So skipping each part just give an error concerning the next part?
LR7875 said:
So skipping each part just give an error concerning the next part?
Click to expand...
Click to collapse
Yeah
thepredictor said:
Yeah
Click to expand...
Click to collapse
In service mode IMEI is NG. Does that have anything to do with no network issue?
IMEI status NG
Hi, I'm unable to make call because of not registred on network problem (my phone is G925I) When checking *#06#, it gives me my correct imei code But when testing *#0011#, i got IMEI Status: NG What does NG mean and if it is a problem,how to...
forum.xda-developers.com
LR7875 said:
IMEI status NG
Hi, I'm unable to make call because of not registred on network problem (my phone is G925I) When checking *#06#, it gives me my correct imei code But when testing *#0011#, i got IMEI Status: NG What does NG mean and if it is a problem,how to...
forum.xda-developers.com
Click to expand...
Click to collapse
Done all of that. No luck
OK, let's go back to beginning: you've bought the used phone. 960F never was (as factory leaving) dual sim phone.
so, let's start from the beginning:
contact the seller and ask what the hell have you bought (if it was any variant of the S9 at all.. somehow I doubt it).
2nd: write down the IMEI and serial number, and check with Samsung if this configuration ever existed (if not, what I suppose, the IMEI/sn info about the REAL model can give you a hint what have you bought).
Having the above info in hands, find the "service firmware", 5 files ROM for your device and try to flash it.
If it will not work still, I'm afraid you have two options:
1. check IMEI against stolen devices with your carrier.
2. Go to Samsung service asking for help.
(if it was any variant of the S9 at all.. somehow I doubt it).
Click to expand...
Click to collapse
Well mostly it isn't a fake mediatek phone as it will not even have a download mode.
Probably he bought a shi**ily refurbished phone with it's internals mixed from multiple versions of the s9, in the best case.(a Frankenstein variant of the S9)
LR7875 said:
Well mostly it isn't a fake mediatek phone as it will not even have a download mode.
Probably he bought a shi**ily refurbished phone with it's internals mixed from multiple versions of the s9, in the best case.(a Frankenstein variant of the S9)
Click to expand...
Click to collapse
spamtrash said:
OK, let's go back to beginning: you've bought the used phone. 960F never was (as factory leaving) dual sim phone.
so, let's start from the beginning:
contact the seller and ask what the hell have you bought (if it was any variant of the S9 at all.. somehow I doubt it).
2nd: write down the IMEI and serial number, and check with Samsung if this configuration ever existed (if not, what I suppose, the IMEI/sn info about the REAL model can give you a hint what have you bought).
Having the above info in hands, find the "service firmware", 5 files ROM for your device and try to flash it.
If it will not work still, I'm afraid you have two options:
1. check IMEI against stolen devices with your carrier.
2. Go to Samsung service asking for help.
Click to expand...
Click to collapse
I'm going to solve this mystery for both of you. The phone he bought is indeed an S9. Here in Pakistan, 'software' guys in shops can convert these to dual sim models with some z3x and Chimera f*kery.
As for why his phone isn't working - it is because the phone had a tampered IMEI to bypass local custom charges levied on all imported phones (insane charges, doubles the price of these kinda phones). Once he flashed a new image on his phone, his IMEI status would have become NG instead of OK, which prevents the phone from accessing any networks.
Solution is to visit the same 'software' guys, ask them to 'patch' the phone. It is a 5 minute process, requires root (which these phones already have).
Source: Am Pakistani. Own a phone.
Hello a few months ago i purhased a galaxy a7 2017 ds from ebay. The phone was android 7. Everything was ok until i upgraded to android 8 with odin. Then the network locked and i cannot make or receive calls. When i try i get a message of unregistered network. I tried to reinstall the rom with odin but same results. Both of the imei are shown and are clean. What can i do? The rom version is A720FXXS9CTJ2 brazil
Forgot to add that my carrier operator stuck to greek cosmote. My new sim is vodafone. When i insert the sim. I get the welcome to vodafone message. My contacts are there but not network registered. Sim info shows the operator as cosmote and not as vodafone
Hi! Did you solved it?
Make sure your imei from phone box and phone be match!
flashing new rom changes 'efs partition', which have your imei registration infos!
Useful to reflashing firmware from sammobile with re-partitioning option on (by pit file) !
If not works follow this: ref-a-2017-modems-and-bootloaders-collection.