You Can Use Rubber Bands As Phone Holders
It’s inconvenient when you need to glance at your GPS but don’t have a co-pilot to hold it up for you and don’t have one of that window or air vent holders to hold your phone (and potentially dangerous). It’s fairly simple to achieve the same effect with a rubber band. If you loop it through a few vents on your center console and around the top and bottom of your phone, the tension will keep it in place.

You Can Use Rubber Bands As Phone Holders