Most games can be played while listening to songs. If the game takes up your music player, you can't play while listening. You can turn on the mute switch on the side, play music and play games. That's how I play. Game Settings-Game audio and game music are turned off. You can listen to music. Connect the headphone cable, press the middle button to start listening to the song, press once to start and pause, press twice to the next song, and press three times to the previous song, and the background will keep running. Finally, open the game and listen while playing.

Apple is a fake backstage. When the memory usage exceeds 60% of the phone's memory, it will automatically turn off the memory usage of some applications, which is why IOS will not get stuck no matter how many applications it opens. (Similar to the tombstone mechanism of WP8). Prison break is possible, if you think it is necessary.