How to set up Wi-Fi on my iPhone 4?

How do I set up Wi-Fi on my iPhone 4?

Simple.
Take the battery out of the iphone. Remove sim card. Hold power and home button for 5-10 seconds. Put battery and sim card back in. Turn on phone. WALAH.

Go onto 'Settings' 'Wi-Fi' turn on Wi-Fi and then enter your password etc.simple!

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