Bit of an odd question to ask and there are probably enough Mobile / comms gurus out there to tell me. My mobile signal and castle donut is pants, outside 5m away is good, but the second I go in, I lose most date and voice drops in and out, never more than one bar. As a Blackberry user its a pain in the rod. I've been looking at GSM repeaters, are they any good, do they work, will I still get data? are they a spastic proof install? Any help gratefully received...... you cnuts.