iphone13promax needs to operate two software at the same time to open the camera and then open the music.

Tutorial on how to take photos and record videos while playing music on your iPhone: First, open the iPhone's built-in "Camera App" and stay in the photo mode, then slide up to return to the iOS home screen. Open the "Music App" to play music, whether it is playing built-in Apple Music, Google Music, Spotify, KKBOX or a third-party music app, and then switch back to the Camera App. (Face ID models can be switched by swiping right on the white bar at the bottom). At this time, please note that the camera is still in the photo mode. If you slide the shutter button to the right, you will directly enter the "quick video mode". At this time, the iPhone will start recording, and the music will continue to play in the background. When recording, both the music emitted by the device and the recorded sound will be recorded together. If you want to stop recording, just click the "red stop button". Can.