Thanks for your reply.
Unfortunately it says that all sources with 3.5mm jack it should work, however the controls do not work. This is not the case with phones. I have to press and hold the mic button down to have decent sound. Otherwise the sound is awful and alot of hum and hizz.
Not enterely true.
Sincerely
I have also sent an email to klipsch support for this. And read on another forum (nokia) that other people also have problems with the "i" series on Symbian phones.