my phone samsung note 4 turns turns off all the time and is super slow,

A

AC Question

my phone keeps on turning off all the time. i have to remove the battery for few minutes and put it back on so i can start it. when im on phone call and the home screen turns black/idle the phone call disconnect then the phone will die and wont open again. i reboot my phone to factory setting 3 times already and reformat the micro SD twice still nothing change. is there anything else i can do to make it work?