The Dropbox mobile app gives you different ways to upload files from your phone or tablet to your Dropbox. Once files are uploaded, they will sync with Dropbox on your computer and all your other devices.
Dropbox can automatically upload photos and videos taken from your Android device. This feature is called Camera Upload, and you can turn it on when you first install the app or by going to the app's settings. You can also choose whether to allow uploading when your device is connected to a cellular network.
First navigate to the location within your Dropbox where you would like to put these files. Then tap the menu button in the top-right corner of the screen and choose Upload here. You can select files from your gallery or your phone's local memory.
To check the upload status for files, just locate the file in your Dropbox and look at the progress bar underneath the file's name.
Uploading to a shared folder will also allow those you've shared the folder with to see your photo or video immediately on their computer (or even on their mobile device if they also use Dropbox).