A few months ago, T-Mobile introduced new measures to deal with scam callers for anyone on the network. Scam ID tells you if a call you're receiving is from a number that's likely to be a scam, giving you a heads-up before you answer. Furthermore, you can have Scam Block cut out those calls altogether before they even reach your device. These features are completely free to T-Mobile customers, and now MetroPCS subscribers are getting the same treatment.

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