One mobile number, two phones: What is iPhone handoff and which carriers support it?

If you find yourself swapping between two iPhones regularly, whether for work or casual use, you're going to want to set up Handoff.

If you find yourself swapping between two iPhones regularly, whether for work or casual use, you&#39;re going to want to set up Handoff.<p><img src="https://www.engadget.com/img/gallery/one-mobile-number-two-phones-what-is-iphone-handoff-and-which-carriers-support-it/intro-1789133674.jpg" /></p>