Is possible to get pictures on iPhone back after being deleted?

I deleted my pictures but I have to get it fixed, I'm worried is there a way the owner can restore my pictures somehow! Please help because I had bad & personal pictures which I wouldn't want him to see!

Nope once they are deleted there's no way of getting them back unless the iPhone was synced with icloud and had photo stream enabled. Even then he would need your apple id and password