Where is the missed call reply of Redmi note9Pro?

Xiaomi's mobile phone can automatically reply to text messages when there is no call through advanced phone settings. The following is the operation step ***5.

Open phone options, click menu options, click phone settings, click advanced settings, and then click call rejection SMS switching options. Through the above steps, Xiaomi mobile phone can automatically reply to SMS when there is no incoming call through advanced phone settings. This is because the function of automatically replying to short messages is set. How to cancel the automatic reply to SMS when the call is rejected: 1. First turn on the phone and find the dial. 2. Select dialing settings. 3. Enter more phone settings. 4. If the incoming call refuses to receive SMS, click Cancel.