Xiaomi Redmi 9AT
Android 10.0
1. Find "Contacts"
Press Google.
Press Contacts.
2. Create contact
Press the new contact icon.
3. Select address book
Press the drop down list next to "Save to".
Press Device.
4. Enter name
Press First name and key in the required first name.
Press Surname and key in the required last name.
5. Enter phone number
Press Phone and key in the required phone number.
Follow the instructions on the screen to add more information such as an email address and a personal ring tone.
6. Save contact
Press Save.
7. Return to the home screen
Press the Home key to return to the home screen.