How to Block Someone on FaceTime

Wait for the FaceTime call to be placed by the user you wish to block.
Tap the red 'Decline' button on the iPhone's screen when the incoming FaceTime call appears.
Repeat anytime a call is placed by that FaceTime user.
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How to Get FaceTime on a Mac Air (5 Steps)

Click the Mac App Store icon on your MacBook Air computer.
Enter FaceTime in the search bar.
Select the 'FaceTime' application.
Click the '$0.99' icon.
Click the 'Buy App' icon to purchase and download the application to your MacBook Air's desktop. Apple will automatically bill the cost of the FaceTime application to your iTunes account.
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How to Log Out of FaceTime

Launch the FaceTime application. Click 'FaceTime' at the top of the screen and select 'Preferences' on the pull-down menu.
Click the switch next to 'FaceTime' to change the setting to 'Off.'
Click 'Done.'
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How to Video Chat on Your iPad (3 Steps)

Touch 'Contacts' on the main screen and then select a contact to video chat with.
Touch 'FaceTime' on the Info screen to initiate a call. If the contact declines the call or fails to answer, the message 'FaceTime Unavailable' appears; if the contact accepts the call, the person's camera feed appears.
Touch the microphone button to enable or disable audio, touch the camera button to switch to the front or back camera, and touch 'End' to end the call.
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How to Use FaceTime

Tap the 'Phone' application from the home screen of your iOS device.
Tap 'Contacts' in the navigation bar at the bottom of the screen.
Scroll through your list of contacts, then select the contact that you want to have a FaceTime chat with.
Tap the box labeled 'FaceTime' on the contact's screen. The FaceTime application will attempt to contact the other party. Your device rings while FaceTime is contacting the other iOS device. If the other person accepts the connection, your screen will show the other person's image. A small box also appears on the screen displaying the image the other person sees from your device.
Speak to your contact as normal while holding the device directly in front of you so that your contact can clearly see your image on their screen.
Tap the 'Camera' icon at the bottom-right corner of the screen to switch from the camera on the front of your device to the one on the back. Use this feature if you want to show the person you are speaking to an image on the other side of your device.
Tap the 'Mute' button on the bottom-left corner of the screen to prevent the other person from hearing you. Tap the button again to resume audio.
Tap the 'End' button at the bottom of the screen when you are ready to end the call.
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How to Unhide Apps iPhone Categories

Press the 'Home' button on your iPhone.
Tap the 'Settings' icon on the home screen.
Tap General.
Tap Restrictions.
Type the Restrictions passcode at the prompt. A list of apps and content categories appears.
Tap the On/Off option next to the name of an app that you want to unhide, such as the Safari Web browser, YouTube or the FaceTime video-conferencing app, to set it to 'on.' The app is now enabled, and its icon reappears on the iPhone's home screen.
Tap an item in the Allowed Content section if you want to unhide categories. For example, tap Music and Podcasts, and then tap the Explicit option to set it to 'on,' or tap Movies, and then tap the name of a rating to enable it. You can also tap Allow All Movies to enable and unhide all movie categories. Now when you browse and search for music in Apple's iTunes Store, you will be able to access material that falls under these categories.
Press the 'Home' button to return to the iPhone's home screen. Tap the 'iTunes' icon to access Apple's iTunes Store to browse and look for material that falls in the categories you have just unhidden.
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How to Delete Facetime Calls

Open FaceTime on your Mac, iPhone, iPod touch or iPad.
Click or tap the 'Recent' link in the bottom toolbar.
Click or tap the 'Clear All' button to delete your recent call list.
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