I noticed something very strange tonight. I have 2 iPhone 3G's - one is an italian unlocked 8GB and one a locked UK 16GB. The 16GB is shielded so that when I get a call I don't get speaker inteference when on my computer like now. I thought that was a standard specification on ALL 3G iPhones. Then I noticed buzzing coming from my speakers tonight - at first I thought it was another phone I had near the speakers but I removed that and it still happened! So I made a call on the unlocked iPhone and it was buzzing the speakers! Either - sheilding is NOT standard on all iPhone 3G's and it depends on the country they come from or I have a seriously faulty iPhone 3G!? (although buzzing speakers isn't really a fault lol). Has anyone else experienced interference from their iPhone 3G's?