Ask for an answer, what should I do if I can't send a text message with the iPhone 6 mobile phone Unicom card?

IPhone6 mobile phone supports the use of Unicom number card. If you can't send information by using this mobile terminal, you can try to restart the mobile phone or replace it for testing to see if the following conditions exist: 1. The SMS center number is set incorrectly; 2. No signal or low battery; 3. The system is busy during the peak period of holiday SMS sending. We suggest you try again later or avoid the peak period. 4. The sending format is incorrect. If you send a short message to PHS users, you need to add the area code before the number; 5. The short message sending time exceeds 24 hours; 6. SMS inbox and sending box are full; If the above reasons cannot be solved, you can contact Unicom's manual customer service or go to the business hall to confirm whether the SMS function is enabled and hand it over to the staff.