Hi all in another thread I mentioned that I had contacted 3UK about my constant week signal. They told me to upgrade to latest software...1.22.771.1...WTF I am on 18.104.22.168, surely this is the latest? anyway, they are ringing back.... In the mean time, should i try a sim from another network? My phone is sim free and unbranded so trying my orange or tesco sim? The only thing, would it mess up all my settings?