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AT&T introduces green check mark for verified calls on select Android devices, making it easier to spot robocalls

AT&T Introduces Call Validation Displays on Select Android Phones to Combat Robocalls and Spam Calls

AT&T has launched call validation displays for select Android phone models, allowing users to easily identify and differentiate between spoofed robocalls and legitimate calls from verified sources. Users of Samsung Galaxy S10, Galaxy S10+, or an LG V40 ThinQ who receive calls from authenticated AT&T numbers will see a green checkmark beside the number and a message indicating that it is a “Valid number.”


However, AT&T has announced that it will be adding call validation displays for iPhone users in the future. This move is part of AT&T’s efforts to combat robocalls and protect its customers from fraudulent calls. AT&T uses a system called SHAKEN/STIR to authenticate calls and prevent spoofing, which is when a caller falsifies their phone number to make it appear as though the call is coming from a different number.

AT&T is utilizing the SHAKEN/STIR standards to authenticate numbers, which is a digital authentication system that helps in identifying spoofed calls. The company is rolling out call validation through its robocall-blocking service, AT&T Call Protect, which is now available for free to its customers. If you wish to know more about how SHAKEN/STIR works, you can read a comprehensive overview.

It is worth mentioning that AT&T’s call validation may have limited effectiveness since not all carriers have implemented SHAKEN/STIR yet. Among the four major carriers, only AT&T and T-Mobile have implemented authentication for calls made between the two networks. Verizon is currently working to implement SHAKEN/STIR, while Sprint announced in a letter to the FCC in November 2018 that it would start testing SHAKEN verification in the second half of 2019.

As more carriers adopt SHAKEN/STIR, AT&T and other providers will be able to authenticate more numbers, improving their ability to identify and flag spam calls.

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