How can I change a Fit to Page photo to a Full Page photo?

On iOS:

To change your photo from Fit to Page format to Full Page, simply tap on a photo that you have added to open Page View. From there, you can tap on the square format at the bottom of the screen to change to a Full Page format. You may then crop and adjust your photo however you like. Make sure that you re-crop the image to ensure the faces are still in the frame. When you’re finished, tap Book View to save.

On Android:

To change your photo from Fit to Page format to Full Page, simply tap on a photo that you have added and select the Edit Page option to access our collage tool. From there, you can tap on the square format at the bottom of the screen to change to a Full Page format. You may then crop and adjust your photo however you like. Make sure that you re-crop the image so that the faces are still in the frame. When you’re finished, tap Done to save.