Open Control Center
Tap Screen Mirroring
Tap Stop Mirroring
On Mac, open Control Center
Click Screen Mirroring
Select Stop Mirroring
On Apple TV, press Menu or Back on the remote
On Windows, open Quick Settings
Select Cast or Project
Choose Disconnect
On Android, open Quick Settings
Tap Cast, Smart View, or Screen Cast
Tap Disconnect or Turn Off
On the TV or device being mirrored to, stop the mirroring session from its settings if needed