Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

If you’ve bought an iPad with 4G/cellular capabilities (we discuss whether that’s a good idea in our 2015 iPad buying guide) or a new iPhone, you need to buy and install a SIM card. Here, we explain ...

This SIM card unlocking post is presented by iToolab. iToolab has released a new tool designed to quickly and easily let you unlock your iPhone or other smartphone’s SIM card and even switch cellular ...

While most people seem to manage just fine with a single SIM card in their smartphone, some -- especially travelers, who can save money by fitting a local SIM card into their handset -- love the ...

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 ...