SD cards are used to store and transfer information between digital cameras, mobile phones, Personal Digital Assistants (PDAs) and even small computers. The SD card is inserted into the side of the digital device and it stores pictures, ring tones, documents and contacts.
We often take photos and pictures by digital camera. And photos or music or media are a lot of files in a Phone/PC. And the space not enough . But we can transfers file to SD Card.
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