Playing music in the shower, what effect does it have on mobile phones?

Listening to music on your mobile phone while taking a bath is harmless to your health. But playing songs in the shower for a long time, the mobile phone will get used to the feeling of echo, and it will feel that it is really nice to sing. Over time, the mobile phone will become narcissistic and feel like a master of music. Therefore, in order to cultivate a good moral character of not being blindly confident and self-aware about your beloved mobile phone, don't use your mobile phone to play music when taking a shower.