Reading all contacts from phonebook and check if desired contact is present. If not present need to add that contact

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Can anyone help with scenario Reading all contacts from phonebook and check if desired contact is present. If not present need to add that contact

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https://www.google.com/url?sa=t&source=web&rct=j&url=http://rakeshkirola.blogspot.com/2015/04/appiumadding-contact-in-phonebook-using.html%3Fm%3D1&ved=2ahUKEwj-pcGLioj5AhXiA7kGHcCADekQFnoECAYQAQ&usg=AOvVaw0MUiQCM-PhbxV1HHKZrfko