![Prenote info](https://www.att.com/ui/frameworks/rwd/2017.07/styles/2.2.0/images/svg/master/blue/numbers-letters/linear-info.svg)
When a call is blocked, it is routed directly to voicemail. The call blocking feature may not affect phone calls made or received via third-party apps installed on your device. Please contact third party app developers for assistance with such applications.