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You may need to backup your data if you are planning on changing your phone, be able to get back everything in case of a theft/loss or to just get the phone the way it was before (without losing Contacts/SMS). I did it for the last reason & surprisingly the battery life doubled, exactly what I needed (probably because of lots of background services not running anymore). Better backup before the world gets upside down on you. (Note: This guide is for both non-rooted & rooted phones but users having root access should try Titanium Backup) Things we will Backup Contacts System Settings SMS Call Logs - Applications Software you’ll need Astro File Manager SMS Backup & Restore Call Logs Backup & Restore AVG Anti-Virus Free  (Optional) Contacts & System Settings If you have a Gmail account associated with your phone (& definitely it is) than it’s a non-issue because all your contacts are automatically backed up with Gmail & in the ...