Why didn't the text message sent by Xiaomi's mobile phone arrive?

There are six reasons why the text message sent by Xiaomi's mobile phone was not delivered.

1. SMS center number is not set correctly. Please reset it. Select Information, and select Set up SMS Center. The number of SMS centers varies from province to province, so users can call the local passenger transport company for consultation.

2. There is no signal or the battery of the mobile phone is low, and the mobile phone is fully charged. Try again when the signal is enough.

3. The system is busy due to the peak period of holiday SMS sending. Please try again later or avoid the rush hour.

4. The sending format is incorrect. When PHS users send short messages, they need to add the area code before the number and edit it again.

5. The mobile phone blocks the short message sending function. Contact customer service, or change your mobile phone number.

6. Blacklisted by SMS.