The SIM card is locked to a particular cellular data provider, so if you switch carriers, you'll probably need to change SIM cards. This can be done by removing the SIM tray from the side of the ...

When you use an iPad that comes with both Wi-Fi and cellular options for browsing the web, your device will have a removable Subscriber Identity Module, usually referred to as SIM cards. According ...

First, the SIM card tray pictured above said to be procured from Foxconn (the rumored Apple tablet manufacturer) and available for $14.05 starting October 23rd for the 4th generation iPhone ...

Of course, without an Apple tablet for it to slot into, your $14.05 is pretty much wasted. However, the design tells us (maybe) a little about the shape of the device it's intended to be used with ...