What's wrong with the red exclamation mark when texting?

A red exclamation mark will appear when sending a text message. Because the information was not sent out, there was no reminder of success. Generally, it is because the mobile phone network is not good that the SMS fails or the card is loose. Either the other party pulled you into the blacklist and the information you sent was rejected by the other party.

In these cases, you may want to turn off the phone first to see if the card is in poor contact. If the contact is poor, use an eraser several times before connecting. If there is nothing wrong with the card, please close it and open it again to check whether the mobile phone network is normal and whether the mobile phone is in arrears. If the above two situations are not available, then it is likely that the other party refuses to answer. At the same time, you can also call the customer service phone of Telecom to inquire about the situation. China Mobile calls 10086 for manual service, China Unicom calls 100 10 for manual service, and China Telecom calls 10 for manual service.