The FCC announced that all carriers must adopt the STIR/SHAKEN protocol by June 30, 2021. The protocol is designed to combat robocalls, specifically aimed at the calls trying to hide their caller ID. The protocol requires carriers to verify phone numbers. The FCC estimates fraudulent call schemes cost Americans approximately 10 million per year. For the implementation to work carriers must test it with other networks. It will require cooperation among telecommunication companies. A way to display a “call verified” stamp when a unknown or unsaved number calls your device. Robocalls won’t disappear overnight but this is a step in the correct direction to preserve our privacy.
https://www.engadget.com/2020-03-31-fcc-stir-shaken-june-30-2021.html