The most useful feature is that it gives you an option to send text messages, voice calls, and video clips within the Siilo app which can be accessed from anywhere in the world. There are times when I am not able to get connected to the internet or there are problems with my phone network. It would be great if they have more servers to increase their reachability. We use this application to communicate with our patients and other team members, and it has been working great so far. We have been able to solve our communication issues related to our office.