We're in a bit of a notspot, and so I'm used to hanging out of windows to try and get a signal.
Consequently I didn't hold out too much hope for PN Mobile but it seemed to be worth a try.
Was getting partial signal at edge of house (bungalow) but nothing special. Then for some reason I looked at the meter while standing in the centre of the house next to the fireplace. 3 or sometime 4 bars! I can actually make mobile calls from inside my home!!!! This is unheard of. Presumably the signal is coming down the chimney
Out and about I'm getting 4g or 3g even buried deep in M&S at some outlet centre somewhere.
So, PN Mobile you have a happy customer - not sure I'll brave porting my old number over from Tesco though - let's not spoil a good thing