Syphone is a freeware Macintosh utility for use with Apple's iPhone. The program installs on your Macintosh and does not alter the iPhone in any way. This application lets you view, save, and back up your SMS messages. With Syphone you can now archive and view SMS conversations, including those that have been deleted from the iPhone.

The iPhone has a limit on the number of SMS messages it can store at one time. If this limit is exceeded, existing conversations must be deleted in order to make room for new messages. Syphone allows you to view and/or save any of these conversations, including deleted messages. It uses the familiar iChat format to display archived SMS messages. In addition, if you have multiple iPhones synced to your computer, Syphone allows you to view and archive messages from any of the iPhones.