I've the next problem with my 6230i:
When I'm seeing a film in the phone, I cannot advance or rewind despite in the options there is a menu where you can adjust the time interval to advance/rew (ex: 10, 20 or other sec.) and in the instruccions it's said that with left/right buttons you can rew/adv but when I push them nothing happens....

What's the problem? How can I solve it?

THANKS

P.D.: I'm not english, so I'm sorry if there is any mistake of writing.