A serious bug discovered in Apple's iOS allows FaceTime users to access the microphone and camera of the device they are calling even if the device's owner does not answer the call.
The scenario: Someone FaceTimes another person who has an iOS device and before answering, adds themselves and the recipient to Group FaceTime. 
This will cause the caller's microphone to be activated, allowing them to hear what's going on in the room. If the device owner now presses the power button to mute the FaceTime call, the front-facing camera will also be activated.
This means that if someone calls you on FaceTime, they could hear and see what you're doing without you knowing.
It is currently unknown who first discovered the bug, but many are posting it on social media as a video, as you can see below.
Now you can answer for yourself on FaceTime even if they don't answer🤒#Apple explain this.. pic.twitter.com/gr8llRKZxJ
— Benji Mobb™ (@BmManski) January 28, 2019
9to5Mac reports that Apple is aware of the problem and will release a fix this week.
Until then, it would be a good idea to completely disable FaceTime on your device from Settings – FaceTime.
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