POSSIBLE FIX TO ALL ROMs

Fix no signal : #rilfix

Fix Display always bright when display off : flash #nougatfirmware

Fix mobile data : add new APN and switch to it, or reset APN, reboot

Fix unable to install apps #teslafix

Fix photo result zoomed : #fixphoto

Fix dark video #darkvideofix, #darkfix2, #darkfix3, #micamera, #miuicamera, #cameringo, #miuicameraport, #robincam

Fix roaming #roamfix

Fix Volte : add new apn and switch to it, or reset APN, or change "persist.camera.HAL3.enabled=1" to 0 in build.prop, or flash #multirom

Fix recent app button #recentappfix, or #recentappfix2

Fix irrelevant led colour #ledfix