Is there a way to make the screen stay on while using the car dock (other than making it stay on all of the time regardless of location)? If I have my phone docked the speaker phone works well according to the people I am talking to, but I cannot hang up the call when the call is complete unless I hit the power button on the top (on left side when docked in landscape), which is hard becasue it is right next to one of the clips on the dock.