Josh Miller/CNET At least four startups are betting the world isn’t ready for mobile payments. Unlike services like Apple Pay and Google Wallet (which use your phone), all-in-one cards or “smart cards” embrace a familiar medium — the plastic credit card — and turn it into an all-in-one payment solution. Smart credit cards primarily offer …

Now playing: Watch this: Remove scratches from your Apple Watch 2:42 Just two weeks into wearing the Apple Watch, and my timepiece was smothered with micro-scratches. Like any piece of stainless steel jewelry, scratches are completely normal. But also like any piece of stainless steel jewelry, if you’re not happy with scratches, there’s a way to remove them. Polishing stainless …

Sarah Tew/CNET Without a nearby iPhone, the Watch can’t answer calls or receive notifications, but you can use Bluetooth headphones to listen to music stored on the device. Here’s how to set it up. Step 1: Put music on your Watch Of the 8GB of storage on the Watch, up to 2GB can be used for music storage, which roughly …

We know the Apple Watch is water-resistant, but until this torture test, we weren’t sure how much water, shock, impact, or heat the device could handle. So we decided to find out. In a series of torture tests, the Apple Watch was dunked, boiled, slammed, dropped, and scraped. Sometimes it survived — other times, it suffered. Check out the video …

Now playing: Watch this: Extend battery life on the Galaxy S6 and S6 Edge 1:12 The Samsung Galaxy S6 and Galaxy S6 Edge’s batteries are smaller than last year’s, delivering a somewhat disappointing battery life. If you find yourself running out of juice mid-day, the new phones include a feature that automate the process of conserving energy. Here’s how: Head …

Now playing: Watch this: A fingerprint trick on the Galaxy S6 and S6 Edge 1:02 You probably know that the Samsung Galaxy S6 and S6 Edge‘s fingerprint scanner lets you unlock your phone without a passcode. But there’s another, lesser-known way to use the fingerprint scanner: to log into websites. Note that as of now, the feature only works with …

Now playing: Watch this: Hide preinstalled apps on the Galaxy S6 and S6 Edge 0:50 Even though Samsung eased up on the amount of bloatware that normally accompanies its Galaxy phones, there are still plenty of preinstalled apps on the Samsung Galaxy S6 and S6 Edge. Some of them might be useful while other will just hog space in your …

With the launch of Apple Watch in full swing, you probably noticed that this Apple product launch is very different from that of the iPhone or iPad. For starters, the only way to order a Watch is through the online Apple Store. There’s also the added step of trying the Watch on in stores, if you want. If you’d like …

1. There isn’t one perfect alternative. One of the biggest problems with traditional cable subscriptions is bundling — you have no choice but to pay for dozens of channels you never watch just to get the few you want. The ideal alternative would allow you to pick and choose just the channels you want. The reality is that cutting cable …

Sarah Tew/CNET BARCELONA — Not even a year after the launch of Apple Pay, Samsung revealed its own mobile payment solution, launching Samsung Pay at Mobile World Congress in Barcelona. The announcement wasn’t a surprise — clues hinting at a payments play surfaced when the company announced its acquisition of LoopPay in February. Though it sounds and acts a lot …