The next evolution in wireless networking holds promises of self-driving cars and movies that download in the blink of an eye. 5G is big at this year's Mobile World Congress, but don't expect it until 2020.
The most important things to know when shopping for a cell phone.
All-day heart-rate tracking is a step in the right direction, but the smart features aren't nearly smart enough and the fitness side of the Surge is too basic to justify the higher price.
Fitbit's Charge HR adds heart-rate tracking to an already solid fitness band at a great price, but all the kinks don't feel fully ironed out yet.
The Fitbit Charge is a fine replacement for the discontinued Fitbit Force, but you're better off waiting for Fitbit's heart-rate-tracking upgrade.
The Acer Liquid Z220's textured design helps it stand out from the crowd -- but it's a shame about that bezel.
The Charge tracks steps and sleep, and does it well, but you really should wait for the heart-rate-tracking version next year. Here's why.
But how did the Mistress/Master survive being zapped by a Cyberman? And what's with the apple?
All-day heart rate tracking, and it doesn't cost much more than the old Fitbit Charge. The question is, do you need it?
An Italian architect and MIT's Senseable City Lab have teamed up to create an air-conditioning system that only cools when it detects a person underneath it, cutting energy and water costs in sweltering desert locations like Dubai.