Themes and contacts are different. Themes cannot be stored on the SIM, so that's not the cause of your error message.
If you go into the Gallery you can see how much free memory you have.
This message 'memory full ' does it pop up when you are trying to do something or when you try to install a theme/app?
If it's the former, then its probably your RAM which is full. This could be caused by using a theme, wallpaper or screensaver with Flash that eats up your memory. (The ones with fancy clocks, battery indicators etc)
Are you using the in-built browser to install the themes. If so , from what site?
(I'm thinking that if it's any large page there won't be room in RAM for the existing theme, the page and to download the new theme)
Incidentally the phone has 11megabytes of storage, those figures seem to add to more than 11?
Which Nokia site as they have several? What is the address?
You've said on your other thread that you can download themes from other sites, this probably means that the situation is as described above.
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