Hi friends today I am telling you about FRP(factory reset protection). All latest android mobile is using FRP lock software. Which is for security purpose.If anyone hard reset his phone security ask for your email and wifi connection. Please first check what is your previous email than reload it otherwise you cannot open your mobile phone and mobile than you want to go to mobile shop who takes you losts of money. all samsung J series has FRP lock protection. Be careful take care your mobile phone.