T-Mobile, AT&T Now Support STIR/SHAKEN To Fight Robocallers

Posted by at 10:18 am on August 14, 2019

T-Mobile and AT&T can now securely confirm Caller ID info between the two networks, an important step in fighting number spoofing widely used by robocallers.

Both companies have now implemented the STIR/SHAKEN protocol between their networks, allowing caller-ID info to be authenticated, resulting in a “Caller Verified” banner on the phone screen when a call is incoming. T-Mobile and Metro currently offer 12 phones from Samsung and LG that support this banner.

The FCC has urged US telecom companies — under threat of new regulation — to implement STIR/SHAKEN as a means of combatting robocalling and fraud. Once adoption is widespread, consumers will be able to block calls that cannot be authenticated.

Verizon has announced that it is also working to implement STIR/SHAKEN.

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