Why is there no sound from one side of the POCO F7 Ultra speakers?

Thank you for your continued support. The POCO F7 Ultra has undergone strict professional inspection before leaving the factory, so you can feel free about the performance and reliability of your device, knowing that it has been thoroughly tested for quality and functionality.
You can go to [Settings] >> [Additional settings] >> [Accessibility] >> [Hearing] >> [Audio balance] and check whether the slider is centered. Only when it is centered can both speakers have sound.