I could not find a holder made specifically for my HTC DNA. I could only find universal clips. I already had a swivel mount from my previous phone, so I made this holder to fit the HTC DNA. I've included the DNA step file I created to develop the holder in case you want to make a different style. Wall thickness is 1.2 mm. I used 100 fill. Printed with the "bottom" on the build plate, so you will need to rotate before printing. It is designed to be a friction-fit, so you may need to sand a bit to remove any ridges so it slides on easier. In fact, I even added a bit of candle wax to make it slide on easier.