Since I write about mobile technology here on ZDNet, I've been buying and selling gear as part of my review process. I sold my first phone, a Sony Xperia Z2, on Swappa five years ago and continue to ...

As you pick your favorite smartphone, it's also important to consider what network you will be using with that phone. Deciphering different plans from the four major US carriers, and then throwing in ...

Buying used products online can sometimes be risky, particularly when they are electronics. How do you know that laptop, cell phone or digital camera you’re buying actually works as advertised? How do ...