The specific technique for backing up data from a mobile device to a secure server depends on the type and operating system of the mobile device you are using and the security configurations of the secure server. Read and follow the organization's policies and procedures to determine how to back up data from a mobile device to a secure server, and be sure to test to be sure you can restore the data to your mobile device.
If you are allowed to store data on your mobile device, it is a good idea to regularly back up the data to a secure server. If you regularly back up your data and you lose the mobile device or it is stolen, you will still have the data available on the server.