Sergiu Gatlan / BleepingComputer:T-Mobile says it blocked 21B scam, spam, and unwanted robocalls in 2021 via its Scam Shield service, as scam call traffic rose 116%+ YoY to 425M calls per week — T-Mobile says it blocked 21 billion scam, spam, and unwanted robocalls this year through its free Scam Shield robocall …