I\'ve been running my app on an iPhone 5 /iOS 6, but when I try to run it on an iPhone 4S / iOS6 I get \"The run destination iOS Device is not valid for running the scheme N
Quit and Reset Xcode can reslove most problem. The other cause is Device not support iPhone, you can
Quit and Reset Xcode
Device
Target -> select scheme -> General -> Deployment Info -> Device-> select Universal or the current device you want.
Target
General
Deployment Info
Universal