This unit would sit and run away with a giant blowing sound similar to an air conditioner: which one would never want facing them on their desk. You couldn't even use the phone while it was in 'blow mode'. No explanation as to why it would do this -- it wasn't overly warm. Then, it developed the ridiculous habit of turning itself off without prior warning, requiring a reboot. Then it would run for perhaps an hour before doing it again. Don't buy these. The advertising that states they're refurbished is NOT viable.