If your phone is more than a few years old, it may not be safe to use anymore. Here's how to protect yourself.

Mobile phones aren't all that mobile when it comes to switching carriers—or even owners. It may seem like a no-brainer to accept a hand-me-down phone from a friend or family member or buy a used ...

If you're in the market for a smartphone, the topic of buying a refurbished device may have crossed your mind. Refurbished iPhones are pre-owned devices that have been restored, often to like-new ...