While the best unlocked phones almost certainly support GSM carriers like AT&T and T-Mobile, it’s best to look for devices that work with all the major U.S. providers, including Verizon.

We've found deep discounts on the latest models from Apple, Samsung, Google and more. Here's our guide to the best deals on unlocked cell phones for January. $679.99 at Best Buy $729.99 Save $50. ...