How do I configure my router to WPA2 for my iPhone?

What is the make & model of your wireless router? Most routers typically have a web-based administrator interface that you would access with a web browser to make configuration changes ... including wireless security settings.

Look in your router's user manual to find how to configure wpa2 in the router. Typically you would log into the router's admin page and select wpa2 if your router is capable of wpa2.