- Oem 4Gb Minisd Mini Secure Digital (Sd) Card 4 Gb All of the benefits of a standard SD card, but in a much smaller size Store digital images, video, MP3 files, and other data in your mobile phone 4096 MB (4 GB) of storage space Built-in security features let you download, store, and play secure content Includes an adapter for use in both SD and miniSD electronic devices