Crossword Genius

Very keen daughter replacing front of hands-free device (7)

Ross

I believe the answer is:

deadset

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'device' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'very keen daughter replacing front of hands-free' is the wordplay.
I cannot quite understand how this works, but
'very' could be 'dead' (dead can mean very or absolutely, eg 'dead wrong') and 'dead' is present in the answer.
'free' could be 'set' (setting free is a kind of freeing) and 'set' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

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I've seen this clue in The Times.
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