What is preferred activity setter on android?

[AC Question]

I have the AVG virus protector app, and it is saying one threat found. But it won't let me uninstall the app.

 

[B. Diddy]

Welcome to Android Central! Antivirus apps can often give you false positives. Preferred Activity Setter comes up commonly in web searches, usually in Sprint devices, so it might be a Sprint app--is that your carrier?