Hi guys. Apologies if this has been covered but I have done a search - to no avail. I've had a Desire for months now, and recently persuaded my wife to upgrade to a Wildfire. It's on 3 and she's now had it for just over a month. However - she informs me that when she's on a call, the phone starts to make random calls, make bleep sounds and generally screws the call up. Now I'm assuming that the proximity sensor is not working properly. The screen goes blank when held to the ear but quite clearly something is wrong. The people in our 3 store - who now have to rate as the most unfriendly useless people IN THE WORLD wouldn't entertain the idea of swapping the handset for us. They even suggested we should go on the internet and look for updates as it sounds like a software issue! They would only offer to send it away for repair. I thought I'd check on here first for any possible solutions. Many thanks in advance.