Camera permissions regulate when an application can access your device's physical front or rear lenses. Operating systems block this hardware access by default until explicitly enabled by the user to protect privacy.
Open the Settings app on your device.
Scroll down and tap Apps (or Apps & notifications).
Select the app you want to give camera access to (tap See all apps if it is not immediately visible).
Tap Permissions.
Under the Not allowed section, tap Camera.
Select Allow only while using the app or Ask every time.
Verification: Open the target app and launch its camera tool or video call feature; the viewfinder should display the camera feed without a permission prompt.
Open the Settings app on your iPhone.
Scroll down through the app list and tap the specific app (e.g., WhatsApp, Instagram, or Zoom).
Under the Allow [App Name] to Access section, find Camera.
Toggle the switch to the On (green) position.
Alternative Global Route: Go to Settings > Privacy & Security > Camera. This displays a master list of all apps that have requested camera access, allowing you to toggle individual permissions on or off.
Verification: Launch the app, switch to a camera mode, and verify that the video input appears immediately. An orange or green indicator dot will appear in your dynamic island or status bar when the camera is active.
Notification permissions allow apps to deliver real-time push alerts, messaging updates, breaking news, and reminders to your device's lock screen, banner feed, and notification center.
Open the Settings app.
Tap Apps > select the app you want to receive alerts from.
Tap Notifications (or App notifications).
Toggle the All [App Name] notifications switch to On.
Configure specific notification channels:
Review individual categories (e.g., Direct Messages, Reminders, Group Chats) to ensure none are toggled off.
Tap into a category and set it to Default (makes sound/vibrates) rather than Silent.
Verification: Send a test trigger (such as sending a message to yourself from another device); the alert should appear in the top notification tray.

Open the Settings app on your iPhone.
Tap Notifications.
Scroll through the Notification Style list and tap the app you wish to configure.
Toggle the top switch next to Allow Notifications to the On (green) position.
Select your alert destinations:
Check Lock Screen, Notification Center, and Banners.
Set Banner Style to Persistent if you want alerts to stay visible until dismissed.
Toggle Sounds and Badges (the red number count on the app icon) to On.
Verification: Lock the iPhone and trigger an action in the app; the banner and lock screen card will appear with sound.
System Sensors Blocked (Android): On Android 12+, check your Quick Settings panel to ensure the global Camera access tile is not toggled off. If turned off, all camera feeds are blocked system-wide regardless of individual app settings.
Focus / Do Not Disturb (iOS): If notifications are enabled but not appearing or making sound, swipe open the Control Center and check if a Focus Mode (Do Not Disturb, Work, Sleep) is active and silencing incoming alerts.
Low Power Mode / Battery Saver: Extreme battery saver profiles limit background synchronization, which can delay incoming push notifications until the app is manually opened.