Sometimes the initial pairing doesn't register the services correctly. Go to > Bluetooth & devices . Find your phone and select Remove device . Restart your PC.
Because Windows uses its own internal API to handle these messages rather than a standalone driver, the Device Manager remains "confused" and marks it as an unknown device. How to Fix the "Missing" SMS/MMS Driver sms mms driver windows 11
The SMS/MMS function is a sub-service of your Bluetooth adapter. unknown other device SMS/MMS after Bluetooth pairing Sometimes the initial pairing doesn't register the services