I'm really annoyed that my Model S spends most of its time on the Edge network whilst in the vicinity of the southern part of the M25 in UK. Whilst on Edge I cannot use TuneIn or Rdio. I also find the navigation screen to be grey boxes (although on the dash I still have a display). Does anybody else in the area have similar problems? I took the car down to France last weekend and whilst over there the car was picking up a 3G signal the whole time and everything was working as it was supposed to.