You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...
Tech Advisor on MSN
How to switch SIMs on iPhone, including eSIM
Changing physical SIM cards on your phone is always a fiddly business. First, you have to root for the little SIM tray tool ...
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