User guides and documentation
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C905 User guide (PDF) (2 MB)
Full instruction manual. - Find the User guide in another language
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C905 White paper (English) (PDF) (3 MB)
Detailed technical specification.
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Downloads for Windows®
PC Companion
Connect your phone to a PC to update your phone software, handle media files, sync your contacts and calendars and more. Includes Media Go.
Read more and download PC Companion
Media Go
Connect your phone to a PC to transfer, play, organise and sync your media files.
Downloads for Mac
Media Sync
Transfer, play and organise your media files (music, videos, photos, podcasts) between your phone and computer.
Software updates
Is your phone up to date? To get optimal performance and the latest features, make sure your phone always has the latest software version.
Software updates
After a product is launched, our software team works hard to give you a great phone experience with improved performance, new features and bug fixes.
Check out our Blogs
Xperia™, GreenHeart™, Developer World, Products and Games. Each offers the latest news and cool tips & tricks. Interested?