I am quite surprised that all I need to do is touch the bottom left hand side of the phone and the signal dies off quickly. I certainly didn't see this on Nicola's iPhone 4. I don't even need to grip it in my hand tightly, just have it on the desk with a good signal, touch the bottom left and a few seconds later I am down at 2 bars on the GSM network.

I wouldn't be a problem to be honest, but the call quality is much lower then on the 3G, callers have a hard tie hearing me and me them. I'm going to have a go at a couple of the suggestions with the SIM card to see if that helps at all.

Cheers

Cris.