Assalam o alaikumI am using Samsung A17 6gb variant since January. Jo lag issue aap bata rahy hain ye isi liye hai kyun k phone mein previous software updates, app updates, phone set up, etc aap ne sab kuch 1 he din mein kiya hai. Mere sath bhi aise ...
The grey screen thing feels like a software glitch. As far as I remember after the recent patch update it hasn't happened again. Make sure your phone is updated. Moreover you can check your display and system software via Samsung member's diagnostic ...