We have 5 beacons inside a room that how we are set up our lab also we have an iOS application used for detection of beacons using beacon monitoring mechanism. Previously its working fine but last week we found an issue with one of the beacon which doesn’t work as expected. The issue is iOS application is getting a call back for region enter but not for region exit. and last day the rest of the beacons have the same issue. once we removed the battery the app is getting exit callback.