MaxBack asks (nicely, of course) for you to remove all personal data from your mobile device before sending it our way to help us out in the legality-shmegality department. Never fear if you forget, though. It’s standard practice for us to do a factory reset of your phone. But if you feel better knowing you did it yourself… here’s how.

Check out Gizmodo’s most excellent guide:

iPhone

• First, you should probably back up your phone using iTunes
• Go to Settings
• From there, go to General
• Now go to Reset
• Select Erase All Content and Settings
• You’ll be prompted to enter your passcode at this point
• It will take a few minutes, unless you’ve got a fairly ancient iOS device

Android

• Backing up for Android is relatively straightforward; just connect your phone to your computer via USB and drag all of your files into a new folder.
• Pull down your Menu and go to Settings
• Scroll to Privacy
• Click Factory data reset

Windows Phone 7 and 7.5

• Back up with Zune software if you’re on Windows, but there’s currently no way to totally back up your SMS texts for Windows Phone, so keep that in mind if you like to keep hang onto your messages.
• Go to Settings
• Tap About
• Scroll to the bottom of the page and tap “reset your phone”
• Press “yes” when the warning prompt appears
• Warning: You won’t be asked to confirm your password

BlackBerry OS 6

• Use BlackBerry Desktop Manager to back up your phone
• Go to Options
• Scroll to Security
• Now scroll to Security Wipe
• Select all options (Email & Contacts, Applications, Media card)
• Type the word “blackberry” into the box and hit confirm