Why can't text messages be sent out? Displays an exclamation point.

Demonstration model: iPhone12 & & Huawei P40 &；; & Xiaomi 1 1 system version: IOs14.4&; & ampemui 1 1 & amp； & miui12.0.7 There are four situations when an exclamation point cannot be displayed when sending a text message.

1. SMS center number is not set correctly. Please reset the correct number of the SMS center.

2. If there is no signal or the signal is poor, you can go to a place with strong signal to test.

3. The mobile phone has turned off the short message sending function. You can turn on SMS and try again.

4. Being blacklisted by SMS, you need to go to the business hall to remove the blacklist status before you can use it normally.