There are plenty of decent iPhone stands on the market these days. Most of them are pretty compact and short though. The Lookstand is the tallest pocket-sized smartphone stand we have seen. It attaches to the back of your phone and extends it up to 7″. It allows portrait and landscape viewing modes.
The Lookstand weighs only 1.58 ounces. It not only works as a stand with 3 preset heights and adjustable angles but also works as a selfie stick. Expected to ship in January. You can find out more about it here.