Redmi note 9 power on problem July 8, 2019 16 32 64 128 Redmi note 9 power on off problem Redmi note 9 power reboot problem Redmi note 9 power button problem Redmi note 9 power network problem Redmi note 9 power ic heating problem solution Redmi 9 not powering on Redmi 9 power not on Redmi 9 no power on