An item that has been previously used, but it is FULLY operational and functions for use as intended. One Option is for a unique original phone; we have showed the condition of the phone via photos on the option, please check the photo and detail description of the phone before ordering it.
S7 edge system is android 6 , it can not support Android 7 now , we don't suggest you update to Android 7 by yourself . Because Android 7 system is not steady , usually it would be dead when update ,so that is why we alert you. We don't accept any dispute for system problem after you update .
Don't put phone into water to test the phone , we don't offer any warranty or any refund if you drop into water to break phone on purpose.