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T-Mobile’s Digits calling service is designed to make phone numbers device agnostic



T-Mobile’s pitch is simple, “We’re dragging the phone number into the internet age.” The actual functionality is a bit trickier, which is why the carrier looked to do a little bit of analyst handholding and a consumer Twitter Q&A (at 10:30AM PT today) ahead of launch.

The underlying idea is to tie user identity to a single phone number, available across devices, in much the same way that email (or, for that matter, Google Voice and to a lesser extent Apple’s Messages) works. So, you can place calls and send texts through the same number on multiple smartphones, PCs, cellular connected smartwatches and even feature phones – and, lord help you, all of them will ring at the same time when a message comes through.