Phone number field type

  • Release version: Australia
  • Updated March 12, 2026
  • 1 minute to read

    • The E.164 phone number standard ensures that all necessary information for a phone number is included and properly formatted to successfully route an international call over a territory's public telephone network.

    When a user enters a phone number, it is received and stored as a string of numbers. An E.164 phone number field automatically formats and validates the numbers so that they are E.164-compliant when displayed as local and international numbers. The E.164 phone number field type does not replace the phone field type.

    An E.164 phone number field displays:
    • [Optional] A choice list for the phone number territory.
    • [Always] An input box for entering phone numbers.
    • [By Default] A red underline when a phone number does not match the format for the selected phone territory and cannot be saved.
    • [Optional] A green underline when a phone number does not match the format for the selected phone territory but can be saved with Other / Unknown as the territory.
    Figure 1. Phone e164
    A Caller Phone Number field with a drop-down menu for phone number territory and an input box for entering the phone number.