Xiaomi can't send an expression by text message.

Hi! 1. Please open Settings ~ Application ~ Information ~ Clear data, and whether the attempt is normal. Still not working. Please put your mobile phone card in another mobile phone to see if you can send and receive short messages normally. 2. If you can't send and receive SMS normally, please contact the network operator to see if it is a sim card problem. If you can send and receive short messages, I suggest you re-insert the card in your hand.