Follow these following steps and attached figures to connect to the internet manually using iPhone.
1. First you will need to access the Wi-Fi tab in your device settings.
2. Next you will tap on the "Other..." option in your Wi-Fi tab.
3. You'll be shown the screen below. You'll want to input the Wi-Fi name csu-net into the network name text box.
4. Under "Security" select WPA2 Enterprise. Once selected, press "Other Network" at the top to go back to the previous page. A Username and Password field should now appear.
5. Input your NetID username and password.