If your Samsung J701F phone has copy touch and running on Android OS v8.1.0 then it will not respond if you have flashed or made FRP.
Make sure FRP lock is disabled.
To unlock FRP in Samsung j701f you have to flash combination then Enable USB Debugging. After Getting USB Debugging enabled, Connect phone in On mode and reset FRP with UMT using FRP ADB mode.
FRP Lock Must be off.
Then using OTG you have to Enable OEM Lock.
1- Put phone in Download mode using Power + Volume Down + menu then Tap once Volume UP to enter download mode.
2- Download the file & select Zip file in AP or PDA.
3- Click on Start. After flashing gets completed plus out battery.
4- Hard reset using Power + Volume UP+ Menu.
Then Reboot the phone.
Touch will start to respond.