OPPO A57s
Write and send text messages
A text message is a message that can be sent to other mobile phones. If you can't send and receive text messages as soon as you've inserted your SIM, you need to set up your phone for text messaging.
Press the message icon.
Press Start chat.
Press the search field and key in the first letters of the recipient's name.
Press the required contact.
Press the SIM icon.
Press the required SIM.
Press the text input field and write the text for your text message.
Press the send icon when you've finished your text message.
Press the Home key to return to the home screen.
1. 1. Find "Start chat"
2. 2. Select recipient
3. 3. Select SIM
4. 4. Write text
5. 5. Send text message
6. 6. Return to the home screen