The iPad's Subscriber Identity Module connects the tablet to cellular data when Wi-Fi is unavailable. Unlike the iPad Mini, which uses a nano SIM card, the standard iPad uses a slightly larger micro ...
A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text messages, and more.
T-Mobile has started stocking the extra-tiny SIM cards that fit the iPhone 5 for those customers who want to bring their unlocked phone to the carrier. Availability — just like the iPhone 5 itself — ...
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