Easily identify and block calls from likely scammers with Scam ID and Scam Block.
On this page:
- 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.
Scam ID and Scam Block are free of charge with your T-Mobile postpaid plan. You can turn them on or off at any time.
- 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.
Click the button below to update Scam ID and/or Scam Block preferences.
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.
- 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. T-Mobile’s implementation of these standards is known as “Caller Verified.”
- As of January 7, 2019 T-Mobile was first to market for calls between customers on our network with Caller Verified Enhancement, a new technology aimed at reducing spoofed calls to customers.
- If you have a Caller Verified enabled device, you will see "Caller Verified" on the dialer when you receive a call that has been verified as authentic, not spoofed.
- Caller Verified has expanded to include interoperable partners.
Interoperable partner Launch date AT&T August 14, 2019 Comcast Xfinity Voice home phone service April 16, 2019 T-Mobile to T-Mobile January 7, 2019
- 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. SHAKEN/STIR technology lets consumers know that an incoming call is really coming from the number listed on the caller ID display – not a spoofed robocall or scammer.
- LG G7 ThinQ
- LG G8 ThinQ
- LG V40 ThinQ
- Samsung Galaxy Note8
- Samsung Galaxy Note9
- Samsung Galaxy S8
- Samsung Galaxy S8+
- Samsung Galaxy S9
- Samsung Galaxy S9+
- Samsung Galaxy S10e
- Samsung Galaxy S10
- Samsung Galaxy S10+
- 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.
Qualifying service and capable device required. Enabling Scam Bllocking may inadvertently block desired calls. Disable Scam Blocking at any time. Info for some unknown numbers not available.