T-Mobile is committed to the fight against robocalls. That’s why we introduced free scam identification and blocking for every customer.
For businesses who want to make sure their business calls are not inadvertently blocked, we encourage the use of the free website https://calltransparency.com/, which will allow businesses to register their business number(s) and name, so their calls to customers are recognized as legitimate. (Businesses should also register their number on https://freecallerregistry.com, which may be used by additional carriers or analytics providers.) T-Mobile customers can use the free website https://callreporting.t-mobile.com/ to report calls that were improperly identified or blocked. T-Mobile Customers can disable Scam Block at any time. Businesses or T-Mobile customers can also call T-Mobile at 1-800-937-8997 for assistance.