After recent security update my Nokia 6 is behaving surprisingly. 1. Battery suddenly displays full charged though it is say 70% charge remaining. 2 recently it got heated and suddenly shut down. 3 . Today infact from the morning the battery percentage is constantly showing 96% though I am using the phone continuously. 4 the battery menu in settings have suddenly disappeared. I have reboot ed the phone 4/5 times but nothing showing.