I am running stock everything and I got the app to load just fine. I didn't sync contacts because I really do not want to, but it loads the skype contacts you already have into the program. I went to call my girlfriend, I was on wifi on the phone, she was on her pc. I selected call with video, and it showed me on my screen, but once she answered the video part went away. We skype pc to pc all the time, but I figured it would be awesome to video chat her from my phone. Any ideas why this would occur? Wifi should work with the chatting according to the documentation when you first start the app. I don't have 4g at my house, im like 5 miles out of the radius for 4g. ugh. wifi should work though, so this is baffling me.