What if Apple iPhone6s can't activate iMessage?

Please follow these steps step by step:

1. First, confirm your apple.

ID set iMessage and FaceTime correctly. Whether the mailbox settings are correct, whether the phone number is in the list, and so on.

2. In case of iMessage, open Settings, Information, iMessage, and check whether the Apple ID is your email address and the phone number is valid.

3. After all the above information is confirmed, try to restart the service, close it in Settings and iMessage, and then reopen it later.

4. If it still doesn't work, try to recharge the network. In Settings, General, and Restore, select Restore Network Settings.

5. If there is a password, you need to enter the password to confirm before recovery, and then link the Wi-Fi to check whether FaceTime works normally.