We distribute a non-AppStore-app to our agents in the field. Since our app is not from the App Store, it has not been reviewed by Apple. An Apple retail store worker in Australia told one of our agents that the app is not authorized, and to stop using it or else they will void the warranty.
Can anyone verify that the Apple device warranty is not affected at all by non App Store apps? The device isn't even jail-broken and nothing in the warranty clause talks about faulty software (that I could find). I am also certain the Apple (or retailer) employee is wrong because apps cannot break the system!