Yes, if the automatic backup feature is enabled and your files are backed up, you can trigger a manual wipe of your phone at any time.

When the application first launches, you are invited to enable the automatic backup of your photos and videos. We recommend that you do this to fully benefit from the SOS Photos features. You can then choose to load your photos and videos continuously, regardless of your connection, or only when you are connected to the WiFi network. You can then find the photos and videos backed up in the “SOS Photos” directory in your space.