Normally when T-Mobile is talking about AT&T, it involves John Legere mocking the big blue carrier. But today T-Mobile and AT&T are teaming up. T-Mobile and AT&T today launched cross-network call authentication using the SHAKEN and STIR standards. These are the technologies that power T-Mo’s Caller Verified feature, and they verify that an incoming call is actually from the number listed on your caller … [read full article]