1. According to the query of Huawei official website, Huawei mate3pro sounds on the screen, and the vibrating membrane technology: Huawei Mate3Pro adopts the vibrating membrane technology, that is, a special vibrating membrane is placed behind the screen. When the sound signal passes through the vibrating membrane, the membrane will produce tiny vibration, and then sound will be generated. This technology makes the screen itself a speaker, eliminating the extra space required by traditional speakers.
2. Audio vibration technology: Another possible reason is audio vibration technology. Through specific design and material selection, the screen of Huawei Mate3Pro can vibrate and produce sound. When the sound signal is transmitted to the screen, the structure of the screen will vibrate at a specific frequency, thus producing an audible sound effect.