What to do if the LHDC encoding can't be used when connecting earphones to the Xiaomi 13T Pro?

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Accepted Answer

The Xiaomi 13T Pro supports LHDC, and the recommended first step is to adjust the decoding mode in Developer Options while the earphones are already connected. If LHDC still cannot be enabled, the issue is usually caused by device–earphone compatibility or system-version limitations.
If the LHDC encoding can't be used when connecting earphones to the Xiaomi 13T Pro, please refer to the following methods:
1. Ensure the earphones are fully connected before entering Developer Options, then open the Bluetooth audio codec section and manually switch the decoding mode to LHDC to check whether the option becomes available.
2. Restart Bluetooth on both devices and re-pair the earphones, then reconnect and observe whether the codec list refreshes, as temporary connection states can prevent LHDC from loading correctly.
3. Test LHDC with another LHDC-supported earphone model to identify whether the issue originates from codec compatibility, especially since some firmware builds, such as the Russian system version, can not behave the same as the global software version.
4. If LHDC still cannot be activated, submit feedback through both the earphone’s application and the phone’s system feedback panel to allow further diagnosis of codec configuration or compatibility problems.