-Background This issue only happened using XCode 7.0 or later but neither before. The project only has minor changes in sources code but not in assets file as well as the story board.
-Issue After archived the project successfully and waiting the process to be completed after pressing Upload to App Store. The following error prompt
Your binary is not optimized for iPhone 5 - New iPhone apps and app updates submitted must support the 4-inch display on iPhone 5 and must include a launch image referenced in the Info.plist under UILaunchImages with a UILaunchImageSize value set to {320,568}. Launch images must be PNG files and located at the top-level of your bundle, or provided within each .Iproj folder if you localized your launch images.
However, launch image has never been set and exists in the project, therefore i find there are no clues and hints for how to fix this problem. It is confirmed the configuration can work on or before XCode 6.4.
Please kindly advise.