hello,
supposedely i did something wrong

1) Installed Mobile Joomla -> mobile site worked
2) Deinstalled it to test a similar plugin
3) Deinstalled that plugin
4) Reinstalled Mobile Joomla --> no mobile view with iphone (whichworked in step 1)

any ideas?

it is activated in modules (and so on)
i didnt change anything afert installing
install message successful

Joomla 1.5
Site: www.arthen-kommunikation.de

works now thank you

That is good news.
However, I do not know what happened to make it work.
Do you know?
Thanks.

well, i deinstalled every similar plugin, module and so on and reinstalled on a "fresh" joomla without all the stuff i tried out. so unfortunately i cant tell the exact solution

That's OK. You have described a method, (uninstall and re-install), which works.
Thanks.