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.

Experts are warning mobile phone users to be extra vigilant over a fresh wave of SIM-swap fraud, which has doubled in the space of a year. The dodgy practice – which counts Twitter founder Jack Dorsey ...

It’s 2025, and cell phone numbers are ubiquitous. We use our phone numbers to sign up for websites and online services, from retail and banking to social media and ...

Chiara is an award-winning investigative reporter who specialises in banking and fraud, joining Which? in 2015 following six years as a personal finance journalist at a national newspaper. Reports of ...

Chiara is an award-winning investigative reporter who specialises in banking and fraud, joining Which? in 2015 following six years as a personal finance journalist at a national newspaper. Reports to ...

As the last few years have shown, it’s more important than ever to protect our data. If the big tech giants and data aggregation firms aren’t making us vulnerable by lax data protection policies, ...

Activating a T-Mobile SIM card is a straightforward process that allows you to connect your device to T-Mobile's network and enjoy their services. Whether you're a new T-Mobile customer or upgrading ...