Took screenshots for every size in the simulator and I\'m having a problem with 4.7-inch (iphone 6) and 5.5-inch (iphone 6 Plus) screenshots only.... With 4-inch and 3.5-inc
Run your app on the simulator, and save screen shots.
Rename those screen shots to 4.7.1 (iPhone 6), 5.5.1 (iPhone 6 plus) and so on.
set the simulator scale to 100%
Simulator > Window > Scale > 100%
It's been a temporary problem by Apple. Now it should accept your images: Uploading screenshots to iTunes connect for iPhone 6 and 6+
Just rename them to "1.png" and so on.
The iOS Simulator began scaling images. If you're scaling is anything other than 100, change it back to 100. I had the same issue, this seemed to solve it.