How to send short messages when oppoa32 mobile phone dials?

Click the SMS icon first, and then click the button below to create a new message.

After that, click the edit box below to enter the information. Then, an interface for writing information will appear on the phone. You can choose the input method and then edit the information on your mobile phone.

After entering the information, click the contact column at the top of Edit.

Then, use the dial key, enter the recipient's mobile phone number, and then click Send.