Xiaomi's mobile phone can't find the input method for sending short messages.

This situation is generally caused by the unresponsiveness of the input method. Generally, you can run the input method normally by restarting your mobile phone. The specific solutions are as follows:

1. If a third-party input method is installed on your phone, just click the third-party input method software to reset it.

2. If the system comes with an input method, restart the phone directly or download and use a third-party input method.

3. You can also exit the SMS and re-enter the SMS to see if the input method responds.