I have been using phone for a long time and it had it's moments like restarting without warning but this time it just turned off and didn't respond to any button clicks or combinations. Next day I tried the long press again and it showed 0 battery on screen so i charged and it turned on. I tried to back everything up but it turned off again showing 0 battery again.

Now it doesn't turn on at all. My question is... Is it a battery problem or motherboard(this seems more likely)

Cos I have photos that I didn't backup :(((

Bought new battery for my s22 5g as I noticed my old battery seems to be showing its age.. since I have an extra one should I parallel two of this.(Given it's the same battery) Could it possibly lengthen my screen time since it would be double the capacity..? Idc about the look of the phone if the battery would be sticking out of the frame nor the wireless charging too..