Say what you want about T-Mobile but, if it wasn't for them, I wouldn't have a lot of the cool features that I enjoy now as an AT&T customer. Let's hope other carriers follow suit on this one.
"If telecoms and regulators can’t agree on blocking known scam callers and robocalls at the source, can’t our devices at least warn us when a call is coming from a known scam number? T-Mobile has added anti-scam features for its customers in programs that it’s calling Scam ID and Scam Block. "