In the event that the camera and the computer does not see each other, restarting the services described below may help . (This requires Administrative priviliges with your PC. For additional assistance, refer to the computer user manual or consult your computer manufacturer.)
At times, the Canon Camera Connect application for iOS may behave incorrectly when attempting to connect an iOS device to a camera via Wi-Fi . Deleting the app's saved state in the background can oftentimes correct this. This does not harm the app or the device and simply causes the app to launch with a default "state", which can eliminate many issues that prevent the app from connecting to the camera and performing correctly.
Press the [MENU] button on the camera to open the menu, switch tabs, and select [Wireless communication settings]. Selecting the Wi-Fi function settings menu Select [Image Sync], and set either [Still images only] or [Still images + video].
You can change the resolution and compression (excluding movies) settings to suit the purpose of the image you are about to shoot. Resolution determines the amount of pixels used to compose the image and compression determines the overall quality of the image. (Medium 1) 2592 x 1944 Printing to about A4 size (Approx. 210 x 297 mm (8.3 x 11 .7 in.)) Printing to about Letter size prints 216 x 279 mm (8.5 x 11 in.)