OnePlus
Enable or Disable Mono Audio auf OnePlus
Mono audio is an accessibility feature on OnePlus phones. When it is active, the stereo channels of any playback get combined into a single signal, which then plays through both speakers or both earbuds at once.
This is intended for people who have reduced hearing in one ear, since it prevents them from missing audio that would normally only come from the left or right channel. As a side effect, music, videos and games lose their stereo width, and everything sounds flatter than usual.
To check or change the setting, open Open the Settings ➔ Tap on System ➔ Tap on Accessibility ➔ Enable or disable Mono audio. Toggle it on if you need identical audio in both channels, or switch it off to restore normal stereo separation.
If only one earbud or speaker plays sound after disabling Mono audio, the cause is usually a hardware or Bluetooth pairing issue rather than this setting. In that case, check your audio device connection separately.