Using WOW (Wake On WAN) it is possible to wake up your computer using the Unified Remote app from a mobile data connection. It is the same as WOL (Wake On LAN) however not on your home network. This requires some configuration as described below.
This feature was recently added, so make sure you download the latest version of Unified Remote Server (3.1+) and have the latest version of the app (3.1.6+).
If you already have saved servers in the app, then make sure you re-add your servers. This allows to app to receive the required information needed for performing WOW.
Make sure Windows, BIOS, network card, etc all are configured to allow Wake On LAN. Refer to the Wake On LAN tutorial for more details.