Iphone 5 Wi-Fi not working properly?

Well i have an iphone 5 and macbook, iPad

the ipad and macbook are working fine

but

my iphone will connect to the Wi-Fi but will not work, its just stays on the home screen on safari or the app store it doesn't load or anything. I have to keep using my 3g and 4g which is using up all my data in like 2 minutes.

Settings-General-Reset-Reset Network Settings. Then re-join your Wi-Fi network.

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