Did you know you can stream music and videos through Apple TV or compatible speakers using AirPlay?
While playing music or videos from the Music or Videos, swipe up from the bottom of the screen to launch Control Center. Press the Screen Mirroring button and select which device to send the audio or video to – like an Apple TV.
Even if you’re not watching a video, mirroring to an Apple TV in this way can be used to display your iPhone’s screen on your television. This can be especially handy if you want to show a presentation, or a slideshow of photos. To stop this, return to Control Center, and turn off the Screen Mirroring option.
You can also stream video content from Safari websites or from Youtube straight to the big screen, without fiddling in Control Center. Just look for the AirPlay symbol in the video player, tap it and select the device to send to.