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(CNN Business) —  

A newly discovered privacy bug in Apple’s FaceTime software allows users to hear and see the person they are calling, without the recipient even picking up.

The glitch impacts iPhones and iPads running iOS 12.1, and Apple PCs running macOS Mojave with the newly added Group FaceTime feature.

Apple (AAPL) confirmed it started disabling the Group FaceTime feature for all users, but the issue may still impact one-on-one FaceTime calls. Until the company rolls out a fix later this week, here’s how to disable FaceTime on your Apple (AAPL) device:

1. Open Settings on your iPhone or iPad

2. Scroll down and select FaceTime

3. Toggle off the green button at the top of the screen.

To turn it off on a Mac, follow these steps:

1. Open the FaceTime app

2. Go to FaceTime on top of the screen

3. Select “Turn FaceTime Off.”

When the bug is activated, the person who initiated the call is able to hear the live audio on the other person’s phone, but the screen gives no indication that their conversation is being transmitted. In some cases, the bug can also show live video of the other person if they press a volume button to dismiss the call.

The bug was first reported by tech blog 9to5Mac.

Heather Kelly of CNN Business contributed to this story.