Screen Turns on when switching towers

[Liamfm]

I'm looking for an answer to this problem Basically I use my phone as my mp3 player in the car. It sits on my dashboard. Problem is, when driving at night I turn off the backlight so the screen is totally black. Then every time I switch from roaming to sprint or 1x to EV it kicks the screen back on. Annoying!

Is there any way to do a reg edit to make the phone NOT come on when it finds a new tower?

Thanks