Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your concern, kindly follow the given steps to resolve your issue.

Galaxy device heating issue: https://www.samsung.com/in/support/mobile-devices/why-the-device-heats-up-during-use/

Fast charging: https://www.samsung.com/in/support/mobile-devices/my-galaxy-device-is-not-fast-charging-how-do-i-fix-it/

For battery drain issue we want to inform you that when you initially use the terminal, the battery consumption may be rapid due to learning battery usage patterns and application of performance optimization. It will stabilize after a certain period, but if you still have problems, kindly visit a service center.

You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/

Warm Regards,
Samsung Customer Support