If you want to back up the important files saved on your iPhone, you can get plenty of tips from this page to make a backup for your data.
Go to Aiseesoft Resource Center >>Back up and restore iOS data on iPhone/iPad/iPod professionally.
Recover lost/deleted iOS data from iPhone, iPod, or iPad safely.
Transfer data from iPhone/iPad/iPod to your computer or reversely.
Clean up useless data on your device and speed up your iOS devices.
Find and export all passwords and accounts saved on your iPhone.