Facetime

FaceTime works over WiFi. You can only FaceTime with another user that has already registered to use FaceTime on their device and it only works on iOS devices and Mac computers and their devices must be turned on in order for you to reach them.

If they are registered and you have FaceTimed with them in the past, then their device is turned off or it is offline.

Demo wrote:

FaceTime works over WiFi.

Actually, Demo, depending on the device and the carrier, FaceTime now works over cellular was well.

Meg St._Clair wrote:

Actually, Demo, depending on the device and the carrier, FaceTime now works over cellular was well.

Yes, you are correct and I did not include that as I should have. Thanks Meg! 🙂

Eventually, the changes are going to be too fast for any of us to keep up with! 😉

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 😉