Uploading a Backup Folder to Dropbox

Backing Up Your Files to Dropbox Before Switching Devices
1. Open your current device and connect to the internet.
1. Go to www.dropbox.com and log in,
  or open the Dropbox desktop app if installed.
1. Create a new folder in Dropbox called something like "Device Backup"
  to keep things organized.
1. Drag and drop important files and folders (like Documents, Photos, Downloads)
  into the new Dropbox folder.
1. If using the web version, click "Upload" → "Files" or "Folder"
  and select what you want to back up.
1. Wait for the upload to finish completely—make sure the sync icon disappears
  (if using the app) or files appear on the Dropbox site.
1. (Optional) Double-check your backup by logging into Dropbox on another device
  to confirm everything transferred correctly.