Scam ID & Scam Block

Easily identify and block calls from likely scammers with Scam ID and Scam Block.




Scam ID and Scam Block are free of charge with your T-Mobile postpaid plan. Scam ID displays "Scam Likely" on your screen when calls come in from likely scammers on both smartphones and feature phones. Scam Block allows you to block Scam Likely calls. You can turn them on or off at any time. And now, network level protection has been added to stop the increasingly common “Neighborhood Spoofing” and prevent hijacked numbers (where scammers temporarily match the area code and 3-digit prefix of the person they are targeting) from reaching your phone.


Help us improve these services by reporting an improperly identified call.


Turn on/off Scam ID & Scam Block

  1. Log in to your My account.
  2. Click Profile settings.
  3. Scroll to and select Blocking.
  4. Click the toggle switch to turn on/off call blocking for:
    • Scam Block
    • Scam ID


Activate on the T-Mobile app

  1. Open the T-Mobile app.
  2. Tap More.
  3. Select Profile settings.
  4. Choose Blocking.
  5. Tap the toggle switch to turn on/off call blocking for
    • Scam Block
    • Scam ID


Anonymous callers

The FCC mandates that mobile carriers allow callers the ability to block their caller ID information and place anonymous calls. T-Mobile is obligated to honor the privacy of the caller in these circumstances. T-Mobile can't block anonymous calls or override the privacy choice of the caller, but you may choose not to accept them. To make an anonymous call yourself, dial *67 before dialing the number you are calling.


For more information about privacy and security, please see our Privacy Center.


Caller Verified enhancement (STIR/SHAKEN)

  • New FCC standards of STIR (Secure Telephony Identity Revisited) and SHAKEN (Secure Handling of Asserted information using toKENs) have been adapted to help fight scam callers industry-wide.
  • As of January 7, 2019 T-Mobile has begun supporting Caller Verified Enhancement, a new technology aimed at reducing spoofed calls to customers.
  • Spoofed calls occur when a scammer temporarily hijacks a number to match the area code and prefix of the person's phone number being targeted. Current protection apps only block known scam numbers, not spoofed calls.
  • T-Mobile is first to market with this technology, currently only available on the Samsung Note9 (with the latest security update launched January 6, baseband version N960USQU1ARK5), and only for T-Mobile to T-Mobile calls. Other devices will follow later this year.
  • Calls marked as verified have an on-screen display when a call has been verified. Non-verified calls or calls from customers of other mobile carriers continue to come in as not verified.
  • T-Mobile is working with our phone manufacturers to provide customers with as much protection as possible, free of charge.