You can edit your notification settings by clicking "Manage Notifications" in any email, or choosing "Notifications" on the left side of the Facebook app.
1. Tap the Settings tab
2. Tap Notifications
3. Check/uncheck the boxes based on your notification preferences on mobile
1. Swipe from left to right or tap the button in the top left
2. Tap Settings
3. Tap Notifications
4. Check/uncheck boxes according to your notification preferences.