Apple Green SMS sends a message without any hint.

The solution that iphone SMS can't wake up;

1. If you find that iphone SMS can't wake up, you need to try to restart your phone.

2. If it still doesn't work, you need to open the settings of your mobile phone, click "Notification" in turn, find "Information", and then click "Allow Notification" to open this function. At the same time, you need to turn on the notification sound so that you can always know whether there is a short message.

3. If you didn't wake up by SMS on iphone, you may have turned on do not disturb mode, so just turn off do not disturb mode.

4. Alternatively, you can ask your operator whether the type of information you are trying to send (such as MMS or SMS) is supported.

In short, if you find that the iphone SMS does not wake up, you can follow the above steps to solve it, and its operation is relatively simple.