What should you do if you don’t know the right number? If you’re not sure about the number, you can double it. 2. How should you give the person time to answer the phone? Be patient and wait for minutes. 3. When should you tell the person who answers the phone your name and who you are? , you should tell him/her your name and who you are. 4. What should you do if the person you are calling is not in? You should ask the person who is answering the phone to for you. 5. How many tips are mentioned on making a phone call in the passage? There are tips mentioned in the passage.