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 ...

As the iPhone Air goes eSIM-only, and some of the best Android phones also drop the SIM card tray, here's a look at the eSM, ...

The micro-SIM card found in Apple's iPhone 4, both generations of the iPad and an increasing number of mobile devices could be going on a diet once again. Reuters reported that Apple has put forth ...

In order to use the iPhone 4 on T-Mobile you have to jailbreak it, unlock it and then annoyingly cut your fatty SIM into a Micro SIM. Annoying! T-Mobile is making it a little easier by giving Micro ...

4FF stands for 4th Form Factor. A SIM card that is simply physically smaller than a traditional (2FF) SIM card or Micro-SIM (3FF) card. See: SIM The electric contacts and circuitry of a Nano-SIM are ...

According to Apple [AAPL], the Micro SIM cards for the iPhone 4 and Apple iPad are not compatible, meaning you wont be able to use your iPhone 4 Micro SIM in your iPad and vice versa. This seems a bit ...