For the first time ever, Apple’s newest iPhones, the iPhone 5S and iPhone 5C, will launch on all four major U.S. carriers: AT&T, Verizon, T-Mobile, and Sprint. If your contract is up and you’re eyeing one of Apple’s new LTE iPhones, it’s time to weigh your options. To help you choose the iPhone carrier that’s …

Josh Miller/CNET Apps are moving to the cloud. Streaming services like Netflix and Spotify are big. And just about every one of us is addicted to social networking. There’s just one thing standing in the way: your data plan. With unlimited plans dwindling, most smartphone users are stuck with tiered options that sometimes make data usage more stressful than fun. …

With so many features and extras packed into the Galaxy S4, where do you begin? With CNET’s e-book guide, of course. Starting today, “Mastering the Galaxy S4” is available in Amazon’s Kindle store for $3.99. New to Android? We’ve got you. Google maven? You’ll find plenty of hidden tips here, too. We’ve tapped through every last feature, button, sensor, shortcut, …

Editor’s note: This contest is now closed. The world’s fastest-selling Android phone just got a little savvier. CNET How To is bringing its very best, unpublished advice to our newest e-book, “Mastering the Galaxy S4.” New to Android? We’ve got you. Google maven? You’ll find plenty of hidden tips here, too. We’ve tapped through every last feature, button, sensor, shortcut, …

Now playing: Watch this: Use your Galaxy S4 as a universal remote 4:05 Years before smartphones were a thing, Nokia was one of the first manufacturers to add IR blasters to its dumbphones. The use case was pretty limited, though, as the cool factor typically ended after the fun of turning TVs off at Circuit City died off. But IR …

Now playing: Watch this: Google Now vs. Siri: The results speak for themselves 7:40 Good assistants — the kind you can’t live without — are hard to come by. For starters, they should always be on time; any lag simply won’t do. They should also get things right the first time, because who has time for inaccuracies? And, last of …

Screenshot by Sharon Vaknin/CNET Immediately, you’ll be taken through what’s basically a hearing test. High- and low-pitched beeps will play, and you’ll confirm whether or not you hear them. It’s a judgment of your hearing, but also of your headphones. (So, don’t get upset if you don’t always hear the beep.) When you’re finished, two graphs will appear, one for …

Now playing: Watch this: Mirror your Galaxy S4 on your TV 2:18 Despite the ever-increasing screen size on Samsung’s Galaxy line, some types of media beg for a sit-back, big-screen experience. It could be a YouTube video, or just a little something you shot (and even edited!) on your phone. And, as more developers support this option, mirroring can even …

Now playing: Watch this: Maximize your Galaxy S4’s battery life 2:35 With a bigger battery and more efficient processor than its predecessor, the Samsung Galaxy S4 promises to at least survive a typical day. But as Jessica Dolcourt mentions, its slightly larger screen and abundance of features demand that added capacity. Though the S4 (and most other phones) will almost …

Now playing: Watch this: Get rid of bloatware on the Samsung Galaxy S4 1:37 Just a small collection of the bloatware that ships with the Samsung Galaxy S4 (AT&T). Screenshot by Sharon Vaknin/CNET Like pre-installed programs on a Windows PC, the Samsung Galaxy S4 is full of “bloatware,” unnecessary apps and services from Samsung or your carrier that offer no …