Why can't I adjust the volume of my earphones using gestures even after I have set them?

Due to compatibility issues with the Bluetooth protocol version, some mobile phones or computer models may not support the volume adjustment protocol. This problem may occur with any TWS Bluetooth earphones in the market.If you encounter this problem, you can try connecting the Buds Pro earbuds to other commonly used devices to adjust the volume. If this works, then you will know that the problem lies with the device you are using the earbuds with, and not the earphones themselves.