Why can't Apple activate imessage?

The reason why Apple's mobile phone can't activate iMessage may be that the correct activation method is not used, or the iMessage switch is not turned on.

The specific activation method is:

(1) Because the activation of iMessage must be verified by sending SMS, enter *#5005*7672# on the dialing page and press the dial key, as shown in the following figure:

(2) Then, the query results of short message information will appear. If the word "0" appears, it means that SMS has not been set. As shown in the figure:

(3) Then input *5005*7672* will be restored. Add the number of the SMS center and your mobile phone number. The specific number of the SMS center can be searched online for the region and operator, and then press the dial key. As shown in the figure:

(4) Then the SMS center has successfully set up a page, indicating that the number has been initially set, but it has not yet taken effect. As shown in the figure:

(5) Restart the phone. As shown in the figure:

(6) After the phone is restarted, you can see that iMessage is active by directly entering iMessage. As shown in the figure:

References:

Baidu encyclopedia -iMessage