Xiaomi SMS function is missing, how to solve it?

1. Please open Settings ~ Application ~ Information ~ Clear data, and whether the attempt is normal. \x0d\ still not working. Please put your mobile phone card in another mobile phone to see if you can send and receive short messages normally. \x0d\ 2。 If you can't send and receive SMS normally, please contact the network operator to see if it's a sim card problem. \x0d\ 3。 If you can send and receive short messages, I suggest you plug the card back into your mobile phone and send yourself a short message to see if you can receive it. \x0d\ 4。 Please enter the SMS center and check the SMS center number of the contacted mobile operator \x0d\ 5. If the number is correct, please temporarily uninstall the system security software. \x0d\ 6。 If it still can't be solved, please back up the data, enter the recovery to clear the cache, user data and all data, and don't restore the system settings after entering the system \x0d\ 7. If you still can't recover, please go to the nearby maintenance point to check.