QUOTE(evoangel @ May 24 2015, 12:32 PM)
I suspect its the battery i guess. Both note 4 buy from the same provider with the same plan and same time. Usage is very similar with texting,whatsapp and calls only.
If thats the case i think so too. U can try swap batt for 3 days and seee how it goes. If only battery isu then its easy la. At least not the phone itself.