It is primarily used after a clean firmware install, a botched root attempt, or a NVRAM corruption where the device loses its ability to register on a cellular network. Key Features of Version 1.2

Easily write both IMEI 1 and IMEI 2 simultaneously.

Go to Settings > About Phone and tap "MIUI Version" or "Xiaomi HyperOS Version" seven times. Go to Additional Settings > Developer Options and enable USB Debugging .