Access and manage Notifications on iPhone

You can view and manage notifications from Notification Center in iPhone. Usually you can go to notification center by swiping down from top after unlocking your phone. You can also go to notifications center in lock screen, by swiping up from the middle of the lock screen. All the notifications will be listed by day and you can scroll down to see the older notifications. 

You can determine which notifications you want to receive and how do you want to receive. Go to settings -> Notification. You can turn on/off various settings like sounds, show on lock screen, badge app icon, banner, preview, etc., for the notification by app basis.  To manage these settings for a specific app, tap the app and go to details screen.

Go to Settings -> Notifications and scroll down to manage Government (Amber and Emergency) alerts.

You can delete all the notifications received for a particular day by tapping ‘X’ next to the day.

If want to respond to a notification or see more information swipe left over the notification and tap ‘View or press deeply on the notification. You also have a choice to 'Clear' that particular notification.

To clear all notifications, press any 'X' deeply and select 'Clear All Notifications'

To open the app that sent the notification just swipe right over the notification and tab 'Open'. If it’s a notification for a missed call, you can call back by swiping right and tab ‘Open’.