bluenova
OK Computer
full indoor/ outdoor 3g on my old nokia N95, Hackney East London, so far 3 cannot explain or fix it
I am experiencing exactly the same problem, but I have noticed that when I go to different parts of London (mainly out of the centre or north) everything comes back to life and the phone is as good as an iPhone.
I am expecting a call back from three this evening so if I have any update I'll keep everybody posted.
It sounds like you're in a 3 3G black spot and have roaming turned off. The N95 is probably roaming in the background to another network for 2G (GPRS/EDGE) reception as 3 do not support 2G.