Sony's mobile phone will automatically send text messages when there is a missed call. How to cancel this function?

Just cancel in the settings. The steps are as follows:

Step 1: Open the main page of the mobile phone and click Settings.

Step 2, click on the phone.

Step 3: Click the received SMS, and then click Close.

How to save the address book:

Step 1: Open the main page of the mobile phone, click the dial, enter the number to be stored, and click Add.

Step 2: Click New Contact.

Step 3: After editing the contact, click Save.