How to set the SMS of oppo A203 mobile phone to be saved in SIM card?

The order is as follows: press the menu first, then press 5, 1,10,2, and then I wonder if you can be sure that your mobile phone information is set in your mobile phone. If you are sure, press the up key, then click OK, and then press the Hang Up key to enter the standby desktop. You got it? hope this helps