So you are connected to a nice speedy Wi-Fi network and all of a sudden something goes wrong and you can't connect anymore. Well this stinks, but its not that hard to fix this problem. Here are a few things to try out to get your wi-fi up and running again:

Renew DHCP Lease
This is a problem that occurs usually with paid hotspots (airports and coffee shops).
1. Tap Settings -> Wi-Fi Networks.
2. In the DHCP Panel, click the Renew Lease button.

EDGE, But no Wi-Fi?
If it looks like you are connected to Wi-Fi and you go browsing and then you get switched to EDGE. This can be caused by MAC Address Filtering or an incorrect WEP Password.
-WEP Password?
1. Tap Settings -> Wi-Fi.
2. Tap More Info next to the Wi-Fi network giving you problems and then tap 'Forget This Network'.
3. Try accessing it again and enter the correct WEP Password.
-No WEP Password?
1. Tap Settings -> General -> About.
2. Enter Wi-Fi Address into router's filter.
3. See the documentation that came with your wireless router for additional information.

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