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.