Why does the volume of the Xiaomi Buds 6 adjust automatically?

If the volume of your Xiaomi Buds 6 adjusts automatically, please refer to the following troubleshooting guide:
1. Check whether the device you are connected to has a built-in volume protection mechanism, as this is the most common cause of automatic volume changes. When the Xiaomi Buds 6 first connect to a Xiaomi device, the system's volume protection feature automatically adjusts the volume to a moderate level to prevent sudden loud sounds. This is a normal behavior and not a malfunction.
2. Verify the Absolute volume setting in your phone's Bluetooth menu, because this feature determines how volume is synchronized between devices. When Absolute volume is disabled, the phone and the earbuds maintain independent volume levels, which can cause the perceived volume to change unexpectedly when adjusting from either device. Enable Absolute volume to keep the volume strictly consistent between the earbuds and the phone.
3. Note that different operating systems handle volume synchronization differently, which can result in automatic adjustments when switching devices. When connecting to an iOS device, the earbuds automatically sync to the last volume level set on that device. When reconnecting to an Android phone after using another device, the volume syncs to the last moderate level set on the phone.
4. Turn off Adaptive sound if this feature is enabled, as it automatically adjusts media volume based on surrounding noise levels. When this function is active, the volume increases in noisy environments and decreases when quiet conditions return. Disable this feature if you prefer manual volume control.
5. Low battery levels in either the earbuds or the phone can cause unstable volume behavior. Charge both devices fully and check again. In noisy environments like subways, the perceived volume may seem reduced, which is a normal characteristic of Bluetooth audio.
6. If the issue persists after performing all the above steps, please submit feedback and upload the issue logs, as this will help the development team identify and address the problem in future software updates.