What if I can't send a short message from Redmi?

If you have a problem that you can't send SMS/MMS when using your red rice phone, I suggest you try to solve it as follows: 1. First of all, please check whether the SMS center number is correct (the correct SMS center number needs to consult the operator customer service of your network); 2. Turn on the option of always receiving MMS (System Settings-All Settings-Mobile Network-Always Receiving MMS); 3. Ask the operator whether to start the mobile Internet service. MMS can only be sent successfully if it has the function of "mobile internet service", but there is no traffic charge, and operators charge according to the number of messages; 4. Whether the selected attachment of the sent MMS is too large, operators generally have strict size restrictions on the pictures sent by MMS. Please consult the operator for details. 5. Replace the sim cards of different operators and try to send them; 6. Back up and empty all data, upgrade to the latest version, and then try to send; 7. If the above methods can't be solved, it is recommended that you take the machine to a nearby Xiaomi home or an authorized maintenance point for testing. The answer comes from Xiaomi official website.