Well, it's doing

The shell as such is ok, albeit the important lower recess for z. B. missing a battery pack. I've been working out quite well with saw and file. The case looks like adapted for a PDA made and for the iPhone4 with the hot needle knitted.
The steering wheel mount is the mockery. Allerbilligstes plastic and not 5 cents value (plastic screw on plastic thread tape). So it keeps Again fairly with strips of an anti-slip mat improvised. For tough outdoor use natural völligst unsuitable.
Did the thing now in very moderate use and it works so-so. The 3 additional inlets I need for my iPhone4 course.
Positives: the housing includes reasonably well and protects likely reliably even in the rain.
Since there is almost no reasonable choice in the area Bicycle holders for iPhone4 (who is unprotected because his iPhone in a bike mount without Bumper?) Is for me. Zt. The drug of choice in the hope of a better solution. The variant of Otterbox was not mature enough and also far too expensive with then.
Sad to have to spend so much money for such a half-baked solution. But for bike navigation and geocaching, there are probably at the moment no other solution.