If you buy a China phone, chances are that you want to change ROM on it as well. Mine for example was carrying some kind of malware that created folders on my storage that contained logged events. I never found out what it was doing with these logs, but I decided to change ROM anyhow.
Upon changing ROM I lost my IMEI numbers on both radios.
Here is the procedure to restore them:
1) You can find the IMEI numbers under the battery or you can write *#06# in the phone app to display the IMEI numbers before you flash it.
2) After you flash the phone you will notice “strange behaviours” when your phone tries to connect to the network. Not connecting at all or only connect to 3G on a 4G phone.
3) Enter the engineer mode by dialling *#*#3646633#*#*
4) Swap to the “connectivity” tab and enter the “CDS Information” menu.
5) Now look under the “Radio Information” menu and select “Phone 1”
6) At the top there is a command line which begins “AT+” just type there
“AT +EGMR=1,7,”YourIMEInumberHere”. Please note the space between AT and +.
If you get “This command is not allowed in user build” chances are that you have forgotten the space between AT and the rest.
7) Hit send command.
8) Now select “Phone2”.
9) And enter the code “AT +EGMR=1,10,”YourIMEInumberHere”
10) Hit send command.
11) Reboot your phone and you are done.
12) You can check the success by dialling *#06# and make sure the phone displays your IMEI numbers again.
Good luck.
