For those who still didn't activated it... because they think:
- "when I want to use IMessage then by the first turning-ON I could understand the popup/warning arise, letting me know that the Activation has to be done, and that I will pay for this Activation... but me don't want to use it!"
- see here the "IImplementation": if you have a carrier that doesn't "work" with Apple then, as long you don't activate the IMessage, the popup will arise telling/warning you the activation could cost you something. If you choice "Yes", then it will be activated, you pay once, having silence! If "NO/Cancel" then you will get the warning any time your Phone login itself by your carrier(this happen by restart, dead-spot, etc). Also if you never ever have the intention to use it, but you just want no more having the "annoying" warning, then YOU MUST ACTIVATE it!
But WHY to activate it, if I'll never use it?! could you ask
Well, if we categorize the user in "those who want to use IMessage" and "those who don't want" then, in the "normal" implementation, Apple could get the money for activation only for "those who want to use IMessage".
The "IImplementation" targets people who want to have silence... and are prepared to pay for it. Or do you have a better explanation?! :-)
No, I cannot believe that Apple has so stupid programmer! That's why I "predict" it will be never "fixed", just because it's not a bug, but a "feature"! Don't wait for updates/service-packs! Just activate it!
For those which after Activation don't want to use IMessage/FaceTime because... whatever
Follow the Lawrence's instructions! These works 100%, and it's all you have to do!
Conclusion
- the message/warning/popup will never ever come again (because you already activated it) and
- you can sms like before, without IMessage (because you did what Lawrence said).
- turning IMessage On/Off, On/Off, On/Off will not ask you for activating again and again and again
If you, in the mean time love the popup... but you "activated" already... don't be afraid! All you have to do for the popup to arise again, is going here: Deregister and Turn Off iMessage - Apple Support
and follow the steps to deregister your phone number (under "No longer have your iPhone?" also if you still have the iPhone).
:-)