Hi, We have a simple app that connects to backend to fullfil its data requirements. We have recetnly tested our app on iOS 14 and found the local network privacy alert. we yet make 1st release on store and testing phase so the backend is on internal network. We also use 'SCNetworkReachability' with host as our backend url to check whether user is connected to internet before proceeding further on very 1st screen. We have checked 'Local Network Privacy FAQ-2' and found use of nsurlsession's use also count in local network usage, but we can see on device not all apps we downloaded from app store with usage like us requesting permission. Please help with above usage to determine if we need the local network usage description in the app or using services not required as per our usage.

Our app stores some data to keychain , userdefaults or document directory storage as part of user registration process. This data help in determining the user registration status in subsequent launches and authenticate user. Recently, 2 of our customer's device got auto updated to 16.7.2. User is unaware of this auto update but next time they launched the app, it asked them to register instead of allowing them login. As per overall analysis of all aspect, We also suspect that OS update may have wiped out data from one of the storage location which is causing app to determine that user is not registered. We need to conclude the RCA for our issue and if OS update may be a possibility, will need to release an advisory to all users of possible consequences and workaround. Request your help to understand the possibility.

Our app stores some data to keychain , userdefaults or document directory storage as part of user registration process. This data help in determining the user registration status in subsequent launches and authenticate user. Recently, 2 of our customer's device got auto updated to 16.7.2. User is unaware of this auto update but next time they launched the app, it asked them to register instead of allowing them login. As per overall analysis of all aspect, We also suspect that OS update may have wiped out data from one of the storage location which is causing app to determine that user is not registered. We need to conclude the RCA for our issue and if OS update may be a possibility, will need to release an advisory to all users of possible consequences and workaround. Request your help to understand the possibility.