I use MSI star key bluetooh 2.0 USB adapter.
I think the w810i supports BT 2.0. But when I transfer files to the phone, the speed is just around 40KB (kilobytes).
It should have at least 100KB (1mb) for BT 1.2 and 300KB (3mb) for 2.0.
Do you guys know what the problem is and how to fix it?
I reached the sony custom support, but they can't help me

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