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One common area of confusion appears to be the ability to access Password Protected WiFi networks. Part of the problem is that the iPhone will gladly accept any password for the Wifi network without any particular error message if its wrong. Instead, you simply are unable to access Wifi, and the iPhone will keep defaulting back to EGDE.
Note the "lock" icon next to 021J8
Many routers use a Hex or ASCII string for the passcode to allow access to your Wifi network. This requires a small tweak in the settings. In my situation, my home network is run off an Actiontec router (Verizon FIOS) named "021J8". The Actiontec router has a Hex password which won't work on the regular iPhone WEP Password blank.
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One common area of confusion appears to be the ability to access Password Protected WiFi networks. Part of the problem is that the iPhone will gladly accept any password for the Wifi network without any particular error message if its wrong. Instead, you simply are unable to access Wifi, and the iPhone will keep defaulting back to EGDE.

Note the "lock" icon next to 021J8
Many routers use a Hex or ASCII string for the passcode to allow access to your Wifi network. This requires a small tweak in the settings. In my situation, my home network is run off an Actiontec router (Verizon FIOS) named "021J8". The Actiontec router has a Hex password which won't work on the regular iPhone WEP Password blank.
Read More