• For international numbers: Check to make sure the number is in the proper format, using the country search tool below to find country codes and to see example phone numbers.
  • For local numbers: Did you mean to add a local (in country) number instead? Enter the phone number as if you were calling your friend on the phone.
  • Not sure how to add a friend to WhatsApp? Read this article.


When adding a contact’s international number to your phone address book, start with a plus sign (+). Then, write the country code, followed by the full phone number. For example the United States number 123-4567 in area code 408 would be written as +14081234567. (1 is the country code). Make sure to remove any leading 0’s or any special calling codes.

Please check below to find out how to enter a phone number for a specific country.

Special note for certain countries

To add your friend in the United Kingdom with the phone number 07981555555, begin with plus and the country code and (+44) and remove the leading 0: +447981555555.

All Argentinian mobile numbers (+54) should have a 9 between the country code and area code. The prefix 15 must also be removed. The final phone number will have 13 digits total: +54 9 xxx xxx xxxx

Mexican numbers need to have a 1 after +52, even if they are Nextel numbers.

If you are still having trouble finding your contact, email us with your number and your contact’s number. Remember to write your contact’s number exactly as you have it saved in your phone.