Excuse me, why can’t I send text messages with the China Unicom mobile phone card I just bought yesterday?

If the China Unicom mobile phone cannot send text messages, you can restart it or change the mobile phone for testing, and check whether the following conditions exist: 1. The SMS center number is set incorrectly; 2. There is no signal or the mobile phone battery is low; 3. The system is busy due to peak SMS sending volume during holidays. Please try again later or avoid the peak sending period; 4. The sending format is incorrect. If sending a text message to a PHS user, the area code must be added before the number; 5. The text message sending time exceeds 24 hours; 6. The mobile phone has blocked the text message sending function; 7. Being included in the text message blacklist; 8. The number balance is insufficient; 9. SMS The inbox and outgoing box are full; 10. To check whether the SMS function is enabled, you can contact the local manual customer service. If the above reasons still cannot be solved, you can contact the local customer service or go to the business hall to confirm whether the SMS function is enabled and let the staff handle it.