My S23FE phone, which I bought recently 6 months ago, after ONE UI 7, got battery draining drastically. That too at night I'm haven't used my phone, all of 30% of battery drained automatically and it goes off. Anyone facing the same!! Any solutions??

I've changed WhatsApp storage into sdcard, but now my WhatsApp gets stuck frequently. I want to change it into my phone storage from sd card. How move app storage to phone memory from sd card?

In M30S there is a Option like 3:4(48mb) and [3:4].What it's the difference between these two. 

Mobile model : Samsung Galaxy M30SToday midnight 12am my battery level was 25%, then I off to bed, I used nothing with my phone,  while checking the battery level in the morning 7am it was 20%. I also cleaned the RAM by device maintenance before goin...