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.

If you are switching to a different LG phone or you just want to make a backup copy of the contacts in your phone book, saving your data to the phone's SIM card is the most convenient way to ...

Subscriber identity module cards, more commonly known as SIM cards, store phone account information that networks use to connect calls and messages, among other types of communication. As a business ...

On 1 June 2021, the Hong Kong Government announced that it will enact the Telecommunications (Registration of SIM Cards) Regulation (Regulation) to implement the Real-name Registration Programme for ...