Despite its low profile, your phone's SIM card tool kit (also known as STK) is one of the most important things on the device, and whether you realize it or not, you probably use it every day. Built ...

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.

A dual-SIM setup lets you use one phone to make and receive calls and texts from two numbers. It's also super convenient and can save you serious cash when traveling. We show you how to use two SIMs ...

Sustainable SIM design is being made more urgent by an evolving set of environment-focused regulations, with the EU at the ...

eSIM is a modern version of the traditional SIM card that comes built into a smartphone. Unlike a physical SIM, users do not need to insert or remove the card. Instead, your mobile operator can ...

With terminal price rising,Second-hand mobile phones that can be purchased cheaplyMarket excitement,Google's "Nexus One"In response to the appearance of mobile phones that any mobile phone company can ...

The iPhone Air will only have an eSim - will other phone makers also shift away from the familiar - but fiddly - plastic ...

"SIM card" inserted in feature phones and smartphones to communicate is a familiar existence common in daily life, but it is surprisingly few people who know about what the inside is like. When you ...