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For less than two months, O2 customers have had problems activating iMessage and FaceTime. After toggling the button in the settings, the phone number option in the send and receive addresses remained greyed out, preventing users from using the free texting services. O2 suspected that it was blocking iMessage and FaceTime on purpose to avoid losing profits from SMS and possibly calls.

The explanation is finally here. The problem was in the SMS that is sent to Apple for activation. Due to a technical complication, it did not reach the company's servers at all, therefore the service was not activated. The server was dealing with the problem Appliště.cz, who dealt with it directly with the operator. O2 explained the matter subsequently:

In the past weeks, we noticed that some of our customers could not activate the iMessage service, or that its activation took an unreasonable amount of time. iPhone users from other countries also experienced this problem, so it was not limited to the O2 network. The reason for the activation error was that Apple didn't accept the activation SMS that was sent - even though it appeared to be properly sent on our network.

We got in touch with Apple's London headquarters and together we found such a setting so that the activation SMS was properly received. So the activations should now work without problems, which I verified several times on my own iPhone as well.

iMessage and FaceTime should now be activated. You can activate in Settings > Messages by enabling the option iMessage, the same then in Settings > FaceTime. During these two months, the services were functional, but only for those who managed to activate it earlier, the problem with the activation SMS only affected those who, for example, needed to reactivate the service after reinstalling the phone.

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