My neighbor gave me his note 8. when i got it and turned it on android was corrupted and the phone was bootlooping, so i did a factory reset and cleared cache. now my phone bootloops sometimes, sometimes gets into android, gets hot within 30 seconds and crashes with glitchy lines on the screen. i tried resetting again and clearing cache and nothing happens. i took the back off, heated the phone a little and let it cool down, nothing happened. it just keeps switching between bootlooping and booting into android then overheating and crashing. any help would be appreciated, im new to android repair, only ever did iphones. Thank you - JF