put it on my Galaxy S3, updated the Virb Firmware (The instructions on the phone said to connect the Virb to Virb Edit to upgrade firmware, no way to do it that way that I could see, ended up doing it through the device manager on the Garmin website)
It works, but be aware, while your phone is connected to the VIRB, it's now your network conduit for data, your phone will now only accept phone/sms messages when on 4G any other apps that need data, like google maps, email, won't work. I haven't yet figured out how to keep mobile data up while connected to Wifi. Just something to be aware of.
The screen image keeps pixelating, so not the best to use. When going into the menu to change the camera settings, it "looks" like you can make changes, but so far, I have found that nothing actually changes on the Virb. Example would be while changing from "Ultra Zoom" to "Wide" No change, but if you go back into the Menu, it says it will be on "Wide" but the picture proves otherwise.