To add a phone number in Engpsh, you can say "Can I have your phone number?" or "Can you give me your phone number?" If you are giving your own phone number, you can say "My phone number is..." followed by the digits of your phone number. For example, you might say "My phone number is 555-555-1212." It's also common to say each group of digits separately, for example "555, 555, 1212." You can also say the country code and area code before the local phone number. For example, if you are calpng from the United States and your area code is 212 and your local phone number is 555-1212, you might say "My phone number is 1-212-555-1212."