When publishing an app in the Apple App Store, you are required to provide app screenshots. The screenshots are shown in your App Store listing and play a huge role in driving more downloads.App Store screenshots (iOS iPhone / iPad). The iOS App Store enables users to upload up to 10 screenshots.The tables below outlines which sizes are required and the corresponding pixels for portrait and landscape orientation.

Device Size	Device	Portrait Screenshot Size	Landscape Screenshot Size
6.5 inch	iPhone 11 Pro Max, iPhone 11, iPhone XS Max, iPhone XR	1242 x 2688 pixels	2688 x 1242 pixels
5.5 inch	iPhone 6s Plus, iPhone 7 Plus, iPhone 8 Plus	1242 x 2208 pixels	2208 x 1242 pixels
12.9 inch	3rd generation iPad Pro	2048 x 2732 pixels	2732 x 2048 pixels
12.9 inch	2nd generation iPad Pro	2048 x 2732 pixels	2732 x 2048 pixels