Hi erenx59coc Thank you for your asking. Kindly provide the information below so that we can better assist you. 1. Your current firmware version/PUBG version Settings>System>About Phone>Software information If you try to update the firmware and the PUBG to the latest version, does the issue still persist? 2. Is there any zone heating up while using/idling? How long has the battery been used? 3. Enter "Safe Mode" and leave a 100%-charged phone in sleep(idle) mode in a night, then provide me the screenshot of ①Setting>Battery ②Setting>Battery>3 dots on the top"Show app usage" # How to enter and exit "Safe Mode" https://www.asus.com/support/FAQ/1005163/ If the battery works well in "Safe Mode", please check on any disturbance from the installed 3rd party Apps.