iphone 4 no longer connecting to wifi

iPhone 4 no longer connecting to WiFi
location: macrumors.com - date: April 17, 2011
Hey everyone, I've tried just about everything I can think of to research solutions to this problem on my own, and now I come to you. My iPhone has suddenly stopped picking up my WiFi at home. There have been no changes to the settings on the WiFi or on the iPhone; I first noticed it when I came home from work one day and could no longer access the internet through the WiFi. The issue used to be that when I went to the list of available connections under Settings -> WiFi, it would see my home network and put a nice tick next to it; however, that's where it stopped. The icon next to my network would stay that little circle that says you're connected to the mobile internet network, or occasionally 3G (I live in a rural area with very spotty 3G coverage), instead of switching to the WiFi symbol. I'd also get speeds and use up my data allowance while browsing the internet. I tried turning off mobile data, which results in th
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