You’ve just bought yourself an iPhone – welcome to the club! However, while you thought you’d just be able to pop your existing SIM card into your iPhone, you might be wrong. That’s dependant on not ...

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 ...

Find out how to trim your own micro-SIM card for use in phones that require this new format. Sharon Profis Former Vice President of Content, CNET Studios As vice president of CNET Studios, Sharon led ...

What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

When you purchase an iPhone 4, your cellular provider will give you a new micro SIM card to use with your new iPhone. Although the cellular provider will automatically activate the SIM card for use on ...

The subscriber identity module -- SIM -- contains the information used to connect to your wireless carrier's network from your iPhone 4. If you are planning to resell your company's iPhones, you ...

If you're still debating which carrier to get your iPhone 4 this morning, here is some clarification on Sprint's policy on the micro-SIM card included with the world phone, which may be just the ...

If you’re expecting a new iPhone 5 on Friday, and you’re buying it unlocked directly from Apple, you’re going to need a nano-SIM to go with it. Obtaining one is easy if your carrier is one supporting ...

Earlier this week, Macworld reported that the Sprint iPhone 4S would ship with an unlocked micro-SIM slot allowing users to avoid costly roaming fees when traveling internationally by simply inserting ...

Earlier today we heard that both Sprint and Verizon will offer an unlocked micro SIM in the iPhone 4S, which would allow you to use your iPhone 4S abroad with a GSM SIM card. Now it would appear that ...