T-Mobile Works With Apple on Robo-Calling Using STIR/SHAKEN

T mobile logo

Today T-Mobile launched a call protection feature called STIR/SHAKEN in partnership with Comcast to prevent robocalls. It’s available on T-Mobile and Metro on certain phones, and could come to iPhones. (via Reuters).

[In 2018 Americans Got 26.3B Robo Calls]


This is T-Mobile’s technology called Secure Telephony Identity Revisited (STIR) and Secure Handling of Asserted information using toKENs (SHAKEN). It’s a way to identify authentic calls across cellular networks.

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Right now, certain phones from LG and Samsung have the feature. In the future it will also be available for Comcast Xfinity Voice home phone service customers. T-Mobile hasn’t officially confirmed that its ‘Caller Verified’ feature will come to iPhones, but it’s a possibility and T-Mobile is working with Apple on it.

Robocalls and spam calls are an industry-wide problem, and we’ve got to join forces to keep consumers protected. Today, we’re the first to cross industry lines to do just that.

John Legere, T-Mobile CEO

Last month AT&T had announced it successfully tested what it believed was the first STIR/SHAKEN-authenticated call between two different telecom networks with Comcast.

[5G T-Mobile Won’t Launch Until Later This Year]

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