(TrendHunter.com) The ‘NUMBER ZERO' phone holder is a multifunctional accessory for drivers looking to keep their smartphone within view when on the road, while also freshening up the interior of the cabin.... (TrendHunter.com) The ‘NUMBER ZERO' phone holder is a multifunctional accessory for drivers looking to keep their smartphone within view when on the road, while also freshening up the interior of the cabin....