How to do with the small sound of mobile phone Bluetooth?

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How to do with the small sound of mobile phone Bluetooth?If the sound is low when your phone is connected to other Bluetooth headsets, it is recommended that you configure "absolute volume" according to the current Android version of your phone.Android Q (10) and earlier1. Go to Settings >> My Device >> All Parameters, click MIUI version multiple times, and open the developer options.2. Go to Settings>>Additional settings>>Developer options, find "Disable absolute volume function". If the volume is low, it is recommended that you turn this option off.After completing the above operations, you need to delete the current headset pairing information, then turn off the Bluetooth of the mobile phone, and re-pair and connect the headset.Android R (11)1. Keep your phone connected to your Bluetooth headset.2. Go to Settings>>Bluetooth>>Paired Bluetooth Devices, find "Absolute Volume". If the volume is low, it is recommended that you turn this option off.