Without any reason my phone gets to hot and started lagging to much, please help me to sort out from this problem

Is it possible to show the battery level of connected device vai bluetooth on notification panel on samsung a50, please help me.#bluetooth 

1. Fingerprint not registered, and if a finger will be register then the phone is unlocked once in 10 times, so annoying.2. Heating Issu. Phone over heated problems without turning on data or any games, I need to restart my phone because there is ver...

Today, My Phone Will Be unlocked With Someone others fingerprint. My friend unlocked my fingerprint by tapping the scanner some time, how is this possible??