You can backup photos stored in iOS device or data in iCloud Drive. Click the three dots option at the top-right corner and select ' Upload files'. Then, tick the files that you want to backup and tap the ' UPLOAD' button to start syncing. Hit it and select ' Upload files' in the pop-up menu. At the bottom-right, there is a ' +' button. Login your Dropbox account and click into the ' Files' folder. Part 2 Backup Files from Android Smartphone The new added data will be automatically uploaded to Dropbox website server. To back up important files, you just need to directly drop and drop them into the folder. By default, ' Dropbox' folder will appear on your computer, located at C:\Users\Computer Name\Documents\Dropbox. Sign in your Dropbox account after running it. Part 2 Backup Files from Android Smartphoneĭownload and install the desktop application on your PC.In the following passage, we'll show you how to use Dropbox to backup files from computer, Android or iDevice. Instead of iCloud, Dropbox works on every platform, making it always-accessible file storage, data synchronizer as well as backup tool. But for those who are using Microsoft Windows, Android smartphones, etc. For Mac and iOS users, they may benefit a lot from iCloud when comes to data backup and synchronization.