I has recently submitted my iPhone app to App Store , which is compatible with iPhone 3GS and above and is optimised for iPhone 5. While submitting, I had added 1 screen shot for 4 inch screen and 5 screenshots for 3.5 inch screen. You can refer the picture below to get a better idea about the the list of images that i had added:

The issue is,
while accessing appstore through any mobile device , I can see all the screenshots for my app, but when i access appstore from Computer, only the 4 inch retina display screen shots are visible!
has anyone faced the same issue before?
Thanks
Actually it’s because on below reason:
in iTunes of Computer/Mac, it will show iPhone5 & iPad devices (not iPhone4). Because iPhone5 is latest.
Now, when you will open your app in physical device, let’s say iPhone4, then it will show iPhone4 screens.
Same, if you will open your app in iPad then it will show iPad screens.
Hope you got the point.
Cheers.