First, ensure that Bluetooth is enabled on your smartphone. Then log in to the myAir app and follow the prompts to connect to the AirSense 11 machine. If you don’t see the four-digit key on the AirSense 11 screen, go to the Home menu and tap +More, and then tap myAir. If you need assistance, please visit the myAir support page on the myAir app or myAir website.