* less snug fit for the phone (scratches)
* less force required to mount on the HAMA-equipment
* instead of HAMA 5.8mm screws can be used (more rigid laptop-holders or camera mini-tripods)
* thinner base-plate
* overhang on lower side of HAMA-mount less steep
* thicker back-plate
* less stringing


improvements in V3:
* cross-supports on the back
* less snug fit of the phone (better but not yet perfect)
* allow third-party plugs that are wider then the default-one
* less snug fit on the HAMA-connector
* can also mount on camera-equipment (1/4")

improvements in V4:
* hole to access the power-button
* hole to keep your stylus

improvements in V5:
* allow even wider USB-plugs
* holes between the cross-supports in the back against warping and to save material