There are free online cloud storage services with a limited amount of space (2-7 GB) where each cloud storage service has its own specifications to fit your personal or business needs. iCloud for Apple, SkyDrive from Microsoft, Dropbox, Box, etc. You can access many of these websites through your smartphone or tablet to upload and download.
Click on this link to see more descriptions for each cloud storage services: http://www.networkworld.com/news/2012/092512-free-cloud-262764.html?page=1