Please follow these steps for troubleshooting:
1. Confirm whether Dual connection is enabled. Quick photography cannot be activated while Dual connection is active;
2. Delete any unused paired devices on your phone. If the number of connected devices exceeds seven, the quick photography function can not trigger properly;
3. Ensure that your phone’s system software and the Camera APP are updated. Also, check if there is a firmware update available for the Redmi Buds 6, as updates often address functionality and compatibility issues;
4. Close the Camera APP fully and reopen it before trying the gesture again;
5. Resetting the Redmi Buds 6 can often resolve gesture-related problems. To reset, place the earbuds in the case, press and hold the function button until the indicator blinks, and then pair the earbuds again with your phone.