Hi, we are a control system manufacturer for power wheelchairs. We interface mobile devices via Bluetooth to get wheelchair users access to their mobile devices. Our connection is MFi certified since several years. Since iOS 16 the error message "Switch Control Unknown device error." is displayed when using Switch Control to operate the iPhone / iPad from the wheelchair.
Error message "Unknown device error." using Switch Control since iOS 16
Issue was solved with iOS 16.2 update.