― It's been a while since the last Mac Funamizu concept, but here we are again with a sketch Von phone. This device is sensitive to sounds, especially the sound it makes when "hit". As for the size goes, Von any as long as the iPhone, but slightly narrower. ∙ You can knock on your phone if you have new emails or texts, and if you really had one of those Von strike again. And 'different for each voice message is received (SMS or e-mail). If you shake the handset, you can [...].