You generally can't use an Apple iPhone on a cell network if it's never been activated with such a network, although once it is activated you can remove your SIM card or simply never connect to the ...
Landing in a new country should feel exciting, yet many travelers face slow airport Wi Fi, high roaming charges, or the ...
The SIM Toolkit app is the real connecting mechanism of your phone with cellular towers, and is a lifesaver in situations like international roaming.