Mi iPad does not ring when I am receiving FaceTime but my iPhone 4S does. What can I do?

Using FaceTime http://support.apple.com/kb/ht4319

Troubleshooting FaceTime http://support.apple.com/kb/TS3367

The Complete Guide to FaceTime + iMessage: Setup, Use, and Troubleshooting

http://tinyurl.com/a7odey8

Troubleshooting FaceTime and iMessage activation

http://support.apple.com/kb/TS4268

Using FaceTime and iMessage behind a firewall

http://support.apple.com/kb/HT4245

iOS: About Messages

http://support.apple.com/kb/HT3529

Set up iMessage

http://www.apple.com/ca/ios/messages/

Troubleshooting Messages

http://support.apple.com/kb/TS2755

Setting Up Multiple iOS Devices for iMessage and Facetime

http://macmost.com/setting-up-multiple-ios-devices-for-messages-and-facetime.htm l

FaceTime and iMessage not accepting Apple ID password

http://www.ilounge.com/index.php/articles/comments/facetime-and-imessage-not-acc epting-apple-id-password/

Unable to use FaceTime and iMessage with my apple ID

https://discussions.apple.com/thread/4649373?tstart=90

For non-Apple devices, check out the TextFree app https://itunes.apple.com/us/app/text-free-textfree-sms-real/id399355755?mt=8

 Cheers, Tom 😉

You can make a FaceTime call from Contacts or by tapping the FaceTime icon while on a voice call. On iPad 2 or later and iPod touch (4th generation), you can make calls using the FaceTime app.

If you encounter issues making or receiving FaceTime calls, try the following:

Verify that FaceTime is enabled in Settings > FaceTime.

If the issue persists or if you see the message "Waiting for Activation", try toggling FaceTime off and then on.

If you don't see the FaceTime setting, ensure that Camera and FaceTime are not disabled in Settings > General > Restrictions.

Verify that the date and time are set correctly:

Tap Settings > General > Date & Time.

Toggle Set Automatically on.

Verify that both parties are connected to a Wi-Fi network and have an active Internet connection.

You cannot make or receive FaceTime calls using a Cellular Data network connection.

FaceTime uses push notifications to send and receive invitations. Verify push functionality using Mail or other applications that use this feature.

Restart the device.