Been with 3 for over 4years never had a problem with the Network,wifes on with them too.

Works phone is on with O2 and signal coverage where I live is easily on a par with and better than O2 in some places.

Been inside the NEC in Birmingham all today for a conference and no problem picking up a signal with 3 in there.

Well I get little to zero reception around cambridgeshire and bedfordshire, as said buy a pay and go sim to try.