Ultra HD, colloquially known as “4K,” is everywhere on TV shelves and online this year. Previously restricted to only high-end models, 4K resolution has become so inexpensive that your next 50-inch or larger TV will probably be 4K. What does it mean? Does it matter? Why should I care? Here are the basics — a …

Apple’s MacBook Pro, the company’s newest model for power users, is generating vastly more revenue than the company’s ultralight laptop that debuted a year and a half ago, an e-commerce tracking firm says. The MacBook Pro revenue in its first five days has reached 78 percent of last year’s MacBook, Slice Intelligence said Tuesday. In addition, the new Mac has …

Now playing: Watch this: The Google Pixel’s camera continues to wow us 3:03 Google Pixel owners, I have good news: Gone are the days of installing an OS update on your Android device, causing you to spend hours looking at a funky Android robot on the screen and waiting for apps to update. Starting with Android 7.1 Nougat (currently available …

Samsung has published an open letter of apology to its customers following numerous reports of its Galaxy Note 7 handsets overheating catching fire that led to the handset’s recall. “We recognize that we have not lived up to your expectations, or our own high standards. For this we are truly sorry,” YH Eom, president and CEO of Samsung Europe, said …

Google has begun using artificial intelligence to categorize Android apps on its Google Play store, the company said Tuesday. Using technology called a neural network, which is based loosely on the way human brains work, Google processes app names and descriptions to try to figure out which ones to show in search results. It’s not hard to show the Snapchat …

The optical heart-rate sensor on the Garmin Vivoactive HR. Sarah Tew/CNET Every few months we see studies about how fitness trackers aren’t accurate, or how they won’t help you lose weight. The latest comes from The Journal of the American Medical Association, or JAMA as it’s more commonly referred to. The peer-reviewed medical journal published a research letter questioning the …

It’s almost over. We’re almost there. In just a few more hours, this disgusting display of political jackanapery will be finished. If you’ve sworn off social media until then, I wouldn’t blame you. Lately it feels like Facebook should add a tagline: “Brought to you by politics!” Because, let’s face it, most of our feeds are rife with political news …

Facebook is letting brands try to get chummier with you by expanding the capabilities of chatbots in Messenger. David Marcus, Facebook’s vice president of messaging products, said Tuesday the initial success that companies have seen in reaching customers via Messenger spurred the expansion. He spoke at Web Summit 2016 in Dublin. As early as this week, you may start to …

If you want to save a few bucks on a not-exactly-new iPhone, Apple has a new option for you: refurbished models. The company has long sold refurbished Macs, but iPhones now are on Apple’s refurbished products site, too, a change MacRumors spotted. They aren’t just given a swipe with a damp cloth, either. Apple gives each refurbished iPhone a new …

AT&T is giving some of its GoPhone customers a little early holiday cheer. Starting Friday, the company’s prepaid customers who renew their $40 and $55 monthly plans will get more high-speed data automatically. The $55 tier will get 8 gigabytes of data, while the $40 plan will receive 4GB — with both plans receiving a 33 percent boost. Customers are …