Ok!
Its just that what ever you have downloaded or the files that are stored (Photos, Videos) They are still in phone memory go to file manager and move it to memory card.
And go to settings and application manager where you can see the list of applications downloaded if you click on it you can see an option to move the application to Memory card or phone memory. Keep in mind that only few apps can be moved from phone to storage not all.
Hope that helps.
Regards
Abdul