Samsung galaxy a10 battery problem

[Icky]

I bought Samsung galaxy a10 about 3 days ago and since then my battery was dropping quite faster my battery was 100% when I was going to sleep and in the morning it was 50% idk what to do, and I tried to go to settings and pressed battery ram storage and I clicked battery and I tried to put almost every app to rest mode when I'm not using my phone and it's still the same  pls help 

[ranahamza1234567]

you install something in mbile 3 days ago. remember it and uninstall it..then evrything iz normal. kuch app asi asi hoti ha jo batry zeyda urati ha

[Farro7786]

put mobile on airplane mode when you are going to sleep then check btry.... Q k sim signal issue raat k waqt boht zyada btry drain krty hain.... agr airplane mode pr b btry drain ho to customer care centre contact kryn

[AhsanA]

Hi, Thank you for your interest in Samsung Pakistan. Please visit Samsung's nearest service center to get your issue resolved.