Call Screen issue (any way to block it?)


I drive a truck for a living and I have a new GPS app on my galaxy note 2. The problem is when someone calls into me, or I call out, the GPS goes away and it just shows the person I am talking to.

Is there any app, or way that I can either block the screen from coming up at all (I have a bluetooth headset anyway), or make it much smaller and show up as a pop up window of types over the GPS program?

Im using co-pilot for my GPS