I've been using B4A on and off for many years but I haven't a need to for over a year till now and I really don't know its newer capabilities. I have a project that requires something like a video conference call between an android (and Iphone) phone and another device running android, a raspberry pi 3 in which android can be installed. There's no internet involved but the two devices have wifi and bluetooth links. My question is what would be the best way to go about this using B4A