For the past hour or so I have had no phone signal. My phone displays 2 bars in the graph, but there is no G/3/H next to it. In the battery usage screen the phone signal section has been red for about a sixth of the time that it shows. I sent a text & made a call ok around an hour ago, but have tried to text since, but with no luck (obviously). I'm on o2 in the UK & yesterday flashed my rom using Odin to the 2.3.5 version. o2's network problems show that my area is working well. I've also switched to airplane mode, then back but no luck. Any ideas as to what could be wrong/ how to resolve? Would I still be able to get tech support from o2 if I have flashed the rom?