Like the security of encryption, but bandwidth consumption on multiple callers takes a hit and freezes a lot. One to one is quite clear. With over 3 on a call the video screens are better. Less means you can't see screens fully for some reason. Updates Sept 2020.... could do with less ads. EDIT. Had to downgrade to 1 star. Video call only working for one not multiple participants.UPDATE... removed, it stopped working so I got fed up trying to fix it. I've moved to webex instead.