I face this problem with 7.9.8 firmware. Update to latest one seems much better. But it is still problem due to lacking some bands.
Where did you get the last firmware?
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- NFC also not working
- Camera not working event with Google Camera for 8.0
- Portable Wifi Hotspot also not working (when enable gives messsage: error)
Rest of hardware seems ok!
Root working with Magisk
I read that in another forum: ...
make a call
wait 5 sec
grab your dmesg using: adb wait-for-device && adb -d shell dmesg > rgib.txt
FYI: 5s after call ended (fmesg grab not during call but after)...
* flash bootimg from the first post
* send me this log :
adb reboot && adb wait-for-device && adb -d shell "dmesg" | grep "avc" > dmesg-n5120.txt
Flashed latest 5120 rom: lineage-14.1-20170225-UNOFFICIAL-n5120.zip