I have an iPhone 4 and the vibrate stopped working.My dad just bought an iPhone 4 and it has no SIM card yet or anything.It's just at the factory settings. Can I put my SIM card into that phone?. Will I have all of the same contacts and things? Will it still work? Then can I give my dad my iPhone and he can buy a SIM card and set up his plan on that phone?
>>> If I put my iPhone's SIM card into a different iPhone, will it work?