The SIM cards in cellular telephones might be smaller than a postage stamp and less than a millimeter thick but that hasn’t stopped South Korea’s SK Telecom from cramming all the major components ...

Since the dawn of the smartphone age, changing your cellular provider followed the same pattern: You’d get a SIM card from your new carrier, find something small enough to poke the tiny hole on the ...

There are few devices that better exemplify the breakneck pace of modern technical advancement than the mobile phone. In the span of just a decade, we went from flip phones and polyphonic ringtones to ...