Hi! I have an iPhone 4 running iOS 5 and have had some issues regarding wifi this past week. I have had my phone setup and connecting to my home wifi for the past 12months but recently it has developed a problem. Basically when I am at home it would not connect to the wifi. I have reset my router, forgotten the network, reset the network setting and it has not resolved the issue. Only today whilst fiddling i noticed that when i switch off Cellular Data the wifi connects without any problems! Any ideas as to whats going on?