When developing a mobile app using .NET MAUI, particularly for iOS, it’s essential to configure your application differently for debug and release modes. One of these differences is the APS-environment setting, which dictates how your app communicates with Apple Push Notification services (APNs) during development and production. What is Entitlements.plist? The Entitlements.plist is a property list (plist) file that defines various capabilities or entitlements for your app. Entitlements are special permissions that allow your app to use certain services provided by iOS, such as iCloud, In-App Purchases, or push notifications. For push notifications, the Entitlements.plist file contains the APS-environment key, which indicates to Apple whether your app is in development or production mode. Based on this, the app uses either the sandbox or production APNs. What is APS-environment? The APS-environment (Apple Push Services environment) is an entitlement used to specify the environment for push notifications. This entitlement informs Apple’s servers whether the app is running in a development environment or in production, determining which server to send the notifications through: This configuration helps separate testing from live user interactions and avoids accidental notification delivery to users during testing. Configuring Different APS-environments for Debug and Release To configure different environments for Debug and Release modes in your .NET MAUI project, you can modify your .csproj file as follows: It’s important to ensure that both Entitlements.plist and Entitlements-Production.plist files are not included in the build by accident. This can be achieved by setting their Build Action to None: This step ensures that the files are correctly associated with your app for code-signing purposes but are not compiled into the app bundle…