I've been on Virgin for over 10 years. First on Pay as u Go then on contract. I've never had any trouble with the signal (except for a few weeks when they first linked up with EE & Orange last year) and I've used it from Peckam Library up to Crystal Palace, both outside and inside shops and houses !!!!! Speaking to people on EE, it seems the fancier and more complicated the phone, the worst the signal pick-up.