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.

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

The sim card that exists inside your phone is what connects your phone to your specific cellular network. For most of us we might not even realize it’s there. When we get a new phone from our carrier, ...

A SIM-box device is a piece of hardware that holds multiple SIM cards and is used to route international phone calls over ...

Europol has dismantled a large-scale SIM farm operation, arresting seven suspects and seizing 1,200 SIM-box devices ...

CNN chief law enforcement and intelligence analyst John Miller and CNN law enforcement analyst and former Secret Service agent Jonathan Wackrow addressed six key questions related to the investigation ...

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 ...

Several suspects have been arrested over links with a network running a “sophisticated” cybercrime-enabling service ...

The rogue cellular network spanned '100,000 SIM cards across multiple sites,' and was used to make fake calls to US officials, including swatting threats.

Europol on Friday announced the disruption of a sophisticated cybercrime-as-a-service (CaaS) platform that operated a SIM ...