My M31 phone has memory card issues like, the memory card automatically unmounted or doesn't appear in storage section. On reatart it shows and there after for some times it acts automatically as Sd card inserted, then  card removed , then sd card in...

After I updated my M31 with latest software upgrade my battery is draining like any thing. Sometimes charging issues also arises. Earlier while making Internet jn my PC through my hotspot from morning to evening, at the day end my charge remains 50% ...