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
I notice this with certain cable+device combinations (probably bad contact), restarting the XCode will only help for one or two runs and then it strikes again. Changing cable / device is the only long term solution worked for me.