it is a fault with your sis, can she see herself in the corner at her end? has she run through the "audio tuning wizard" under tools in her messenger as this shows if the camera is working or not.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This 2D animation about monsters is illustrated in a Van Gogh painterly style
How to get WWDC 2017 tickets
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.