To change your BYUI wireless password on an iPhone, iPod, & iPad:
While you are on campus and in range of the BYUI Wi-Fi, Go to your settings app and open it.
Next, select the "BYUI" network.
Then tap the "Forget this Network" button. Once you have tapped it, "Forget this Network" will come up with the option to "Cancel", click "Forget this Network." Doing this will forget the network, and erase your old password from automatically trying to connect your I-Phone or I-Pad to the wireless network.
To do this, go back to the "Settings" app and click Wi-Fi, you should be given a list of available Wi-Fi networks to choose from. Tap the "BYUI" Network, and you will then be asked to put in your username and password. Type in your "my.byui" username with your new password.
If the "BYUI" network doesn't appear in the "Choose a Network..." turn off your Wi-Fi and then turn it back on, it should then show up.