buat yg mau battery usage muncul lagi di one ui 3.0 bisa coba clear data device health service dan samsung device health manager service (kalo ga ketemu coba show system apps)
DaenDee bisa liat ini https://eu.community.samsung.com/t5/discussions/s20-plus-android-11-recovery/td-p/2390625 harusnya sih connect ke PC tapi gw coba connect headset bisa
buat masuk recovery mode bisa matiin, colok headset kabel type c terus baru hold tombol power dan volume up