Three has come back into the market with another incredible SIM-only deal giving you a big dollop of data and unlimited texts and calls each month for a much lower price. The current offer gives you ...

A SIM, which stands for ‘subscriber identity module’, is the small plastic card provided by your network that slots inside your mobile phone. It holds information, such as your mobile number, and ...

Google’s carrier service Project Fi is expanding — but not in the way you think. You still need a Nexus device to use the service, so you can’t jump ship just yet. But for you Project Fi subscribers, ...

If you like the idea of the free data-only SIM cards now available through Google’s Project Fi mobile virtual network operator (MVNO) program, just know that you won’t be getting 4G LTE service ...

In this Ask Maggie, CNET's Marguerite Reardon advises a reader looking to use a SIM card from a tablet to get data-only wireless service on his smartphone. Marguerite Reardon Former senior reporter ...