Hi Frank103,
To connect your iPhone to your PIXMA MG7720, your PIXMA MG7720 must first be working on your wireless network. To connect your PIXMA MG7720 to your wireless network, please follow these steps:
1. Press the HOME button on your PIXMA MG7720.
2. Swipe the screen and then select LAN settings.
3. Tap Wireless LAN setup.
4. Tap Standard setup.
5. A list of detected access points will appear. Select your wireless network.
6. Enter your wireless network password and click OK.
Your PIXMA MG7720 will now be connected to your network.
Your iPhone should now be able to Airprint with your PIXMA MG7720.
