This is the question. My Xperia X Compact – Android 8.0.0 – has lost the feature "Media Volume Sync" with my UE BOOM 3 speaker, but not with my Bose QC 35 headset. To note : • My UE BOOM 3 + an iPhone or my computer => Media volume is synchronized. • My UE BOOM 3 + a Xperia X (no compact) Android 7.0.0 => Media Volume is not synchronized. • The feature "Media Volume Sync" is not on the three-dot menu icon in the top right corner of the screen on Settings → Bluetooth. As much as you can, please, use a plain English : I'm a french user. Thank's for your help and attention.
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