Phone apps aren't working even though I have Wi-Fi?

I have an iPhone 5s and apps that use Wi-Fi like Facebook, instagram aren't working, I've reset my phone but that didn't help and I can't even reinstall the apps because I can't get a connection on the App Store, anyone know?

Go to SETTINGS.Turn on your WI-FI. Also turn on your DIGITAL DATA in settings.

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If your Wi-Fi doesn't turn on than the radio might be damaged.

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