My primary device is a 950xl. I also carry around a Nexus 6p without a sim and use it in Wi-Fi zone occasionally. I recently was on a skype conference on the nexus and it worked fine. When I stepped out of the Wi-Fi zone and tried to connect to the conference i realized that skype on Windows 10 mobile does not have the feature. I was shocked. I thought on the flag ship Windows device all Microsoft apps will be full feature. But this is not the case. I also noticed several business apps like delve do not even have a Windows app. Is windows 10 dead. Or will it be in a perennial state of reboot wroth lack lustre apps even from Microsoft own stable.