First, I downloaded TightVNC - a free, lightweight, fast and reliable remote control/remote desktop software and installed this onto my desktop computer. Then I made sure to open up port 5900 on my firewall. Installation of TightVNC is very quick and easy. It can run as a service so it will automatically start when your computer starts, and you can set a password to prevent unauthorized logging in to your system.
Next, I installed Remote Ripple from the Google Play Store onto my Android phone. Then, I entered my desktop computer's IP address (just type "What Is My IP" into Google and you will get it) into Remote Ripple, signed-in with my password and - voilà - connected!
I can do this whether or not my phone is connected to WiFi or not, so I can access my PC anywhere my phone works. It runs very nicely on the 4G mobile network. So not only can I access my EHR, but I also have full access to any file or program on my desktop. Here is a screenshot of my EHR running on my desktop computer as viewed on my Android phone in landscape orientation: