A mobile device management system is described for managing files that are locally generated or stored on the mobile device in a cloud environment. The mobile device is configured with a phone application module, a menu module, and a web browser module to conduct a backup operation of the files on the mobile device to a cloud through a network. The cloud comprises a web server, an authentication server, and a secure storage for authenticating the mobile user's access to the cloud, and provide a secure connection to backup the files from the mobile device to the secure storage of the cloud. The mobile device can also upload the files from the mobile device to secure storage of the cloud, which alleviates the burden of carrying a large amount of files on the file storage of the mobile device. In the upload operation, the mobile device deletes the files that have been uploaded to the cloud.