Hi all, I'm hoping you can help. I moved over to giffgaff (i.e. O2 network) on 9th Oct, SIM only deal. Everything working fine until 18th Oct, when suddenly I lost all signal. It didn't matter where I was, it just wouldn't work (and double checked with O2 coverage in the area; it said that everything was fine). Other things that I tried: - turning it on/off - going in and out of airplane mode - factory resetting the whole phone, and retyping the APNs - putting my SIM in another phone (only have access to an old Nokia, but immediately I had reception in the other phone, suggesting a problem with my phone, not the network?) This morning, I miraculously got web and phone reception perfectly for about an hour, and then it disappeared again. It's definitely not a signal thing, it's like the whole phone gets jammed. So I was just wondering: is there anything else that I can try or that I'm missing? Or does this sound like a fault with my phone and realistically I need to get a new one? Or is there somewhere in London that I could take it to be fixed? Sorry for the questions - I'm not very techy but really don't want to part with my HTC Desire if I don't have to! Thanks in advance for all your help. L.