I just upgraded to CM 13 nightly from yesterday on my Samsung Galaxy S3 but now it shows no SIM card. Here is what I tried:
The phone can not call and say "No SIM card - No service."
Also, this phone came from China (Samsung Midas (I939) by China Telecom).
Thanks in advance!
Did you downloaded Cyanogenmod for I939? Cyanogenmod for I9300/I9305/I9300I won't work (I had those 3 phones, they all have different modem). If the ROM you've flashed is not for I939, go back to Samsung stock ROM. Otherwise...
Do you have /efs backup? If you do, restore it, should help. If you don't...
Well, I haven't found any flashable modems for I939, so you should go back to stock Samsung ROM (you can try getting it here (if you are in China you may need to use VPN) or just search it, or look for f.e. "I939KEDLK6_I939CTCDLK6_I939KELK6_HOME.tar.md5" file). It's flashable with Odin.
If it doesn't help, try:
If it still doesn't help, you'll need:
nv_data.bin file. Those aren't common in the Internet, you should look for other people with working I939.If you have nv_data.bin, do as this Polish guide says:
su -> enter -> mount -o rw,remount /efs -> enter) <- guide says nothing about it/efs/factoryapp/factory_mode contents: change "OFF" to "ON"nv_data.bin in /efs, overwrite existing file if anyAfter this you should get correct IMEI number, if not then you'll have the same IMEI as someone else.
If nothing helps, go to service. Official Samsung service may refuse to help you, but you may find unofficial one with Z3x tools
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