Can an unlocked iphone work with any sim card worldwide?

Can an unlocked iphone work with any sim card worldwide?

Yes,

Any phone unlocked are usually able to work with any carrier that allows for you to use a sim card. It can work worldwide or simply in the region that you are interested in using the iPhone.

Yes, but only the iPhone 3 and up the older ones do not have the ability to connect on verity of band that are internationally in use.

  • Will cutting my sim card work to use as a micro sim card? I just ordered an iPhone 4 and I need to cut the sim card to make it a Micro sim. Will it affect it. I have seen a bunch of video and already have the template it for it. I'm using simple mobile. Do you know if anything wrong happen to it?
  • Will an unlocked iphone 5 work with any nano SIM card? My friend is selling me her iphone 5. It's factory unlocked from verison, but she was on tmoblie service. I use straight talk and you can bring your own phone, you just have to buy the nano sim. I bought a tmobile compatible nano sim, assuming since she was on tmoblie service, she bought it from them. Should this be a problem or is this okay?
  • Why can I not use any sim card in my iPhone even though it is unlocked? I got an iPhone from a friend who says that the phone is unlocked, but every sim card I try in it seems not to work, it keeps on coming up with the same message that "There's no SIM card installed in the iPhone you are attempting to activate. Please disconnect and insert a SIM card in the iPhone." when have clearly put one in. What can I do?
  • If i get a unlocked or sim free iphone Can I use any sim? Okay my moms is supposed to be getting the iPhone 6s and I live with my dad but I supposed to be moving back with her soon the thing is they have different cellphone company s. Anyways if I get the sim free iPhone will I be able to just put a SIM card in it without haveing to change contracts threw the phone