Twilio affects phone number country codes by defaulting to the US code +1 for nine-digit numbers. This is because the Twilio backend, which Zendesk uses, interprets these numbers as originating from the USA.
This automatic assignment is part of the design to streamline the process of adding phone numbers, but it can lead to confusion if you're entering a non-US number. For more details, you can check out the article on managing end user settings.
The country code defaults to +1 because the Support interface and Twilio backend are designed to interpret nine-digit phone numbers as US numbers. This means that if you enter a nine-digit number, it will automatically assume it's a US number and…
If your phone number defaults to the wrong country code, it's likely because the number is nine digits, causing the system to assume it's a US number. To fix this, ensure you enter the correct country code manually when adding the number. This…