How T-Mobile, AT&T, Verizon and Sprint fight robocalls on their network

Answering the phone nowadays can be like playing Russian roulette—eventually, you're going to answer a robocall, and that's a game nobody wants to play.

source https://www.lifetechnology.com/blogs/life-technology-news-blog/how-t-mobile-at-t-verizon-and-sprint-fight-robocalls-on-their-network