Macworld Some iPhones are locked to single cellular networks, especially iPhones bought in the U.S., while others are unlocked, meaning you can use them with any provider. It’s important to know which ...
Unfortunately, not all iPhones support Dual SIM, so we’ve made it easy to find the right one. Difference Between a nano-SIM ...
Apple's iPhone brought the SIM lock into public view because of its original exclusivity in the U.S. with AT&T. However, iPhones were readily "unlocked" by hackers both in and outside the U.S ...