[eluser]luukskywalker[/eluser]
What Jameson says is absolutely true:
[quote author="_Jameson_" date="1209829134"]Well, it actually DOES matter. You need a client that supports cookies, not all mobile software does that (correctly).[/quote]
Because there's no real standard for mobile browsing software, its very hard to make it work on every system.
I downloaded a program called Winwap to test if my website works on a mobile system.
Winwap handles mobile applications different than my phone does.
Winwap didn't work, i got the error message that i talked about in my opening post.
I tested my website on a mobile phone, everything worked like a charm(keep in mind that your whole website must be XHTML strict, this solves a lot of compatibility problems)
So my conclusion is that because there's no standard mobile browsing it CAN work but all phones work on a different base.
I think this will be fixed in the future soon. A lot of new mobile phones have a Windows Mobile Edition on it and i think this will become the standard phone operating system.
Altough your application may work on phones with their own mobile browser.