If i buy an unlocked iPhone 4S, will i be able to use it in the US?

I want to buy a iPhone 4S unlocked to use it in Africa but will I be able to use it when I go back to the US?

Yes & any other country you decide to go too just make sure it's unlocked!

I don't see why not.

  • Will my unlocked iPhone 5 be able to update? Okay so I bought this iPhone 5 from my girlfriend's dad and it's from Verizon. I have Metro Pcs. I went to my phone company and they unlock the phone for me no problem. Now my iPhone has to do a iOS 7 update and I wanted to know if I do the update, will my phone relock again?
  • What type of SIM card do i need to be able to use my unlocked iPhone? I got an unlocked iPhone & I want to be able to make unlimited calls, text & a new number but what kind of SIM card will I need to get & where would I get it?
  • Unlocked iPhone 4/4s still able to use with AT&T? My uncle has an old iPhone 4/4s (I don't remember which one) and it's an unlocked phone. Let's say he gives it to me and I have AT&T. Though it's unlocked, can I still use it with AT&T and update the phone's iOS regularly? Because I know that if you have an unlocked phone for let's say, T-Mobile, you can't update because that'll mess up your jailbreaking stuff.
  • Is tbere any major différence between thé iPhone 6 and the 6s? Whooppeee is Xmas again and my daughter wants new 2nd hand) iPhone… 2 years ago almost bought her 5 before i réaliséd that it was 5s she wanted ( cos thé 5 sucks?) And I don't want to screw up this year…