2 users are on video chat. One of them using portal another one is in android device. Both of them are talking on whatsApp. Mobile device user gets a cellular call which impacts on the video chat. Portal user sees the screen has frozen. Even though the mobile user calls on whatsapp again, the portal screen is still stuck. Turning off the camera switch doesn't make change. Even if i command "Portal restart" it says you can't do it when you are in call. Then i had to plug off-on to make it work. It is a common scenario, I would want your team escalate this issue in next release.