Do you own a GSM sim card? If so, you will be in luck as the new iphone is easy to unlock to use your current sim card.
I’ve tryed other kinds of technology in the cellular field but none as consistent as the GSM network.
An unlock iphone is no complicated matter, you purchase specific software that unlocks the phone and voila, you now have the ability to utilize the phone with a variety of different carriers that use GSM technology.
The simple placement of a sim card into the back of the phone, will allow you to go with a specific carrier and often no contracts are needed.