I downloaded a couple of movies off the net, just to test if it was worth getting movies for the cellphone (good when travelling home with the bus for 2 hours), but the movies did not work, depsite them being in MP4 format. Is there a different MP4 format for each kind of phone?
Difference between the MP4 format on different mobiles
As far as I know, most mobile phone's built-in MPEG-4 support is of the 3GPP organization's defined variant (.3gp) intended for MMS (Multimedia Message Service).
That's right. MPEG4 can be used just as any other container format (like AVI and QT), so you can't know just by looking at the file extension what codec you need, or if it even exists for the A925.
Hmm, perhaps I should get that movie identifier program that shows what you'll need to be able to see the movie and hear the sound.