How to prevent my iphone from being blocked? - 1

Long story short my friend brought my iphone from a friend of his who sells phones.me and my friend had an argument last night and he said keep being rude and i'll have your iphone blocked in a few hours:/ can he do that? How do i prevent it?

Nah he can't. If you are worried though, you can go and check your iCloud account and make sure the account is yours and only you have access. If that's correct then nothing he can do. Else, change it and don't worry because you can always do a clean restore from itunes and then there's 100% nothing he can do.