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
Troubleshooting FaceTime and iMessage activation
Using FaceTime and iMessage behind a firewall
iOS: About Messages
Set up iMessage
iOS 6 and OS X Mountain Lion: Link your phone number and Apple ID for use with FaceTime and iMessage
How to Set Up & Use iMessage on iPhone, iPad, & iPod touch with iOS
Troubleshooting iMessage Issues: Some Useful Tips You Should Try
Setting Up Multiple iOS Devices for iMessage and Facetime
FaceTime and iMessage not accepting Apple ID password
Unable to use FaceTime and iMessage with my apple ID
How to Block Someone on FaceTime
My Facetime Doesn't Ring
To send messages to non-Apple devices, check out the TextFree app https://itunes.apple.com/us/app/text-free-textfree-sms-real/id399355755?mt=8
How to Send SMS from iPad
Hi you guys,four days ago my FT and iMessage worked well on my iPhone 5 IOS6.1.3,but my phone Number did not in the caller ID loop,so I turned both of them off,when I wanted to turn it on again,but failed,I tried so many times,but make no difference,It shows me"waiting for activation".Then I found the solution on internet,and you know there are many possible solutions,just like:
1.change the wifi DNS to 22.214.171.124,126.96.36.199.and you must turn your cellular ON.
2.restore the phone setting.Settings>>General>>reset>>all the phone setting.
3.restore the network setting.Setting>>General>>reset>>the network setting.
3.reset the network.
4.reset your Date&time.Setting>>Date&Time>>set automaticlly>>ON.
5.change another network to activate.
6.take out the sim card to activate.
I did everything,but nothing happend,it still"waiting for activation"
And today afternoon,i try to activate again,when i turn iMessage on,it activate successfully.OMG,it is really amazing.and the same to my Facetime.
I am so exciting and strange how it happen...
I followed all the setting above 188.8.131.52.5.6,the only difference is i turned the "enable 3G" OFF(Settings>>General>>Cellular Data>>Enable 3G>>OFF),but it keep ON before now.
seriously,i am not sure if the "enable 3G"causes this problem,but it really happened to me,so you guys can try if you have the same problem,
hope my answer if helpful for you.
Can I assume that you are trying to use another email address other than your Apple ID email address? If you are using your Apple ID email address verification takes place right then and there and there is no need to retrieve an email from Apple - if the verification is successful that is. When you add another email address is when you need to retrieve the mail from Apple and complete the verification.
In any event, explain what happens when you try to activate?