its not that expensive, the transfer of raw audio to the server would probably be a bigger problem to deal with. Likely the processing is done on the phone. E

its not that expensive, the transfer of raw audio to the server would probably be a bigger problem to deal with. Likely the processing is done on the phone. Either way its not cool, using YOUR data or battery to do their processing to target you with ads. Its likely a passive listening for keywords kind of thing.