Think of all the music you've collected on your phone over the years. All those thousands of pictures and videos, your favorite games, the apps you can't live without, not to mention your contacts and emails. You've got a lot of data on your phone. Let's talk about relocating it, so it's ready and waiting to be transferred to your new phone.
Good to know: You'll need a Microsoft account to back up your phone

Backing up

Backing up your Microsoft Lumina makes it possible to transfer your old data to your new phone

Before you start: Make sure to save and close your files before copying them from your phone to your computer

Backing up data
• On the start screen, swipe down and select All Settings > Backup
• You may be asked to sign in to your Microsoft account signed into the phone (ex. Outlook)
• Select the items you want to back up and the backup method you want to use
• You may notice that some of your apps aren't included in the backup. No worries. You can re-download them from the Microsoft Store (You won't be charged again since your purchase history is retained, although data transmission costs may apply. For more info, contact your network service provider)
• You'll notice that you can't see your phone backups in the main view of OneDrive cloud service, but you can find them in the OneDrive settings
• To confirm your contacts are backed up, check people.live.com
• To confirm calendar events are backed up, check calendar.live.com

Good to know: You don't need to back up your contacts and calendar events separately since your phone automatically backs them up and keeps them in sync with your Microsoft account. Also, you can set your phone to automatically back up your app list, settings and text messages
 

Backing up music
To back up other content, like your music, connect your phone to your computer, and follow the prompts.

You have 2 options. You can either:
• sync content between your phone and computer using the Windows Phone app for desktop, or
• drag and drop content from your phone to computer in your computer's file manager, such as Windows Explorer
Backing up photos
To back up your photos in OneDrive:
• Tap Photos >
• Select the photos or albums you want to upload
• Tap > ; OneDrive
• Select where you want to upload the photos
• Tap
Want to make sure the photos you want have been backed up? Log in to your OneDrive account on any device and check the folder to which you saved the photos

Remove accounts from your phone
It's time to get rid of any accounts you no longer use
• In the App list, Select Settings > Email + Accounts
• Select and hold the account you want to delete
• Select Delete twice
Good to know: Removing an account does not remove accounts and information from the online service itself. Some personal data may be retained by the third-party app after you have removed the account from your phone.