How to Set the Main Image for an Object on the Mobile App
Once you have uploaded images for an Object, you can select which one will be used as the Main image.
To select the Main Image, tap the "More" (3 dots) in the bottom right-hand corner of the screen.
Select the Images tab.
Swipe left on the thumbnail of the image that you would like to use.
Tap Set as main image once the prompt appears.