the customer says they run into a problem of the activation screen re-appearing on mid Nov 12. prompting the user to authenticate with his Apple ID This happened during normal use , by normal use we mean no change in iPhone settings , no remote wipe from MDM or icloud.com no device restart. According to one of the MDM developers, In-house apps that were compiled from Xcode 6.4 and above and installed onto iOS9.3.2-9.3.5 will most likely see this issue because of a probable bug in Xcode but we cannot verify this, we have requested the customer to test Xcode 8.1 and open a case with developer support. The problem doesn't occur when compiling in-house apps in older Xcode 6.1 The timing between the last in-house app install and Activation Lock screen re-appearing is one week if the app is used X number of times. We don't know how an in-house app can trigger an Activation Lock screen. So can you please investigate We have already escalated to iCloud Support Engineering, and found out that the dev