Using a microSD™ Memory Card
With a microSD memory port with up to 16GB support, you can carry your music library with you wherever you go!
Insert a Memory Card
1.Press and slide down on the phone’s backplate to remove it.
2.Insert the microSD card into the slot on the upper left side of the back of the phone.
3.Replace the backplate by sliding it up until it clicks into place.
Format a Memory Card and Add Music
1.From the home screen and with a microSD card
already in the phone, tap 
and then Settings > Memory > Card Memory.
2.Tap Format, enter the phone’s lock code (typically the last four digits of your phone number), and then tap Yes to format the card.
3.Connect your phone to a PC with a USB cable.
4.Choose to open the device to view files using Windows Explorer.
5.
6.Drag and drop music files into the Music folder.
Note: You can back up your contacts to a microSD card. From the home screen, tap 
> 
> Copy to Card, select the contacts you want to copy, and tap Done.