🚨 Full-Screen Intent (FSI) Notifications in Android 14 & 15: What Changed, Why It’s Breaking, and How to Fix It

Android 14 and 15 have restricted Full-Screen Intent (FSI) notifications to critical use cases like alarms and calls only. Apps outside these categories must now request manual user permission through Settings, and FSI only works on locked screens. The changes affect alarm apps, VoIP apps, emergency apps, and custom business applications that relied on urgent full-screen notifications. Developers need to implement runtime checks, provide fallback mechanisms, and guide users to enable FSI permissions through the new ACTION_MANAGE_APP_USE_FULL_SCREEN_INTENT setting.