Connect with iPhone over WiFi

1. You need a jailbroken iPhone, OpenSSH installed.
2. Get ipod-convenience from here, and install it. You will be prompted to enter iPhone's IP address and the desired mount point.
3. In Users and Groups under Ubuntu's administrations section, make sure you are a member of "fuse" group.
4. Connect your iPhone with USB cable. This is needed only once.
5. run iphone-mount. Check the file manager if it is mounted. To unmount, iphone-umount.
6. Rebooting is highly recommended.

Check out Lifehacker's guide!