IPhone 5 has suddently stopped connecting to Wi-Fi

About three days ago, my iPhone 5 just suddently stopped connecting to Wi-Fi. I even had no service at one point. There are no problems with the Wi-Fi at home or at work (which i connect to) it's just connecting to my 3G and sometimes when i get home i will have the 'E' sign showing. It will maybe connect for a few minutes and then disappear and go back onto 3G again.

I haven't done anything differently to my phone and i don't want to be using all my 3G when the Wi-Fi is running perfectly fine.

I'm with Vodafone if that helps and i have had the phone about 6 months.

This is what you get for having an iPhone 5. Get your self a decent phone like the Samsung Galaxy s3 or HTC One. Take it to the Apple retailer store or ring the operator… They will help you out. Its there job.

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