AT&T's single-number service for connected devices helps AT&T, too

AT&T now has a way to use the same phone number for all your connected devices, a capability that could simplify some subscribers' lives but may have more to do with the carrier's own goals.

The new service, called NumberSync, lets subscribers assign their primary phone number to wearables and other devices via AT&T's network. It's a technical leap beyond the legacy numbering system to help subscribers -- and AT&T -- take advantage of the Internet of Things. 

With all your devices reachable with the same number, you'll be able to make and receive calls and text messages from devices like tablets and smart watches even when they're not tethered to your phone at close range. Your gadgets can stand in for your phone when, for example, you want to go out jogging with just a watch. And your contacts will see your usual number when you reach out to them.

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