Use an SD card to add space
Is your Windows Phone running low on storage space? You can add more if your phone has a microSD memory card slot. To check if your phone has a slot, in the App list. tap Storage Sense . If SD card is displayed, your phone has a slot. (The slot might be on the side of your phone or on the back underneath the battery cover.)
If your microSD card can be taken out, you can also use it to move or share media files. See below for more info.
To choose where to store new music, photos, apps, and more
Do one of the following:
- If your phone has a microSD card slot, insert a card. If it's a new card, in the SD card found message box, tap Yes to store new files on the card and go to Storage Sense to review your preferences. If the card isn't new, in the App list. tap Storage Sense
, and then pan down to set your preferences. If your phone has an internal SD card already preinstalled, in the App list. tap Storage Sense
In Storage Sense, choose where to store new music, videos, podcasts, photos, apps, and downloads—on your Phone or the SD card .Source: www.windowsphone.com