You can track your opponents across the skies in three different stages. These stages are God View, Jager, and Padlock and each is briefly explained below.
God View
In God View you are placed into a top-down perspective that gives you a bird's eye view of the map. Enemy planes in God View will appear on your radar where you can then select them by tapping on them.
Jager
Once you have located an enemy plane activate Jager by tapping the lock-on button to the left of the screen so you turn your camera angle into a locked-on view of the enemy you selected in God View mode.
Padlock
To stay focused on your target switch to Padlock, in this mode you will be able to see where the enemy plane is in relation to where you are.