Use the power saving mode. If you are facing these kind of thing after a update you have to wait for next update Samsung may resolve your issue.If it's a physical damage or damage that happens after a longterm use of the device u have to change the b...
Turn off rooting features. Samsung pass is the most secure place to collect sensitive info. harmful things may happen if you use rooting so the phone blocking Samsung pass. (Deactivate rooting software then you can run Samsung pass)