Sending a group message from the Xiaomi smartphone can be done in several ways. We can do this either through the Messages app or through the Contacts app. It doesn't differentiate between SMS and MMS, but automatically selects whether it is a multimedia message when files such as pictures are attached. Once the recipient group has been determined, all the contacts in it are automatically selected for sending, but can be deselected individually.

Note: In this guide we will send a message using the Contacts app.

Android 10 (MIUI 12.0)
Step 1:  Open the  Messaging app
Step 2:  Tap on  Add
Step 3:  Tap on  Contacts
Step 4:  Tap on  Groups
Step 5:  Select a  group
Step 6:  Tap on  OK
Step 7:  Type a  message
Step 8:  Tap on  Send
  1. Open the Messaging app
  2. Tap on Add
  3. Tap on Contacts
  4. Tap on Groups
  5. Select a group
  6. Tap on OK
  7. Type a message
  8. Tap on Send

Xiaomi Instructions