OPPO A72
Android 10.0
1. Find "Start chat"
Press the message icon.
Press Start chat.
2. Select recipient
Press the search field and key in the first letters of the recipient's name.
Press the required contact.
3. Select SIM
Press the SIM drop down list.
Press the required SIM.
4. Write text
Press the text input field and write the text for your text message.
5. Send text message
Press the send icon when you've finished your text message.
6. Return to the home screen
Press the Home key to return to the home screen.