Can I trade iPhones as long as all my stuff on it?

Cracked the heck out of my phone. My father and I have the same iPhone 4, and he doesn't even like, use his so he wouldn't mind having my cracked screen one. So can I put all my stuff on my phone on his INCLUDING the number and contacts and everything, and he puts all his stuff on mine? Basically just physically changing phones.

You can if yours is sim type and back up phone before doing it to icloud the when you change you can restore your info on to new phone using icloud back up easy

No you can't