SIM cards are all around us, and with the continuing growth of the Internet of Things, spawning technologies like NB-IoT, this might as well be very literal soon. But what do we really know about them ...

By entering certain strings of numbers and symbols into your phone's dialer, you can gain access to a world of hidden ...

If you're looking to save money on your phone bill, five carriers with the cheapest plans are Visible, Mint Mobile, T-Mobile, ...