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How to Set a Default Phone Country Prefix in Microsoft Bookings

Khadija Khan Oct 15, 2026 869 views

Question details

The user wants to configure Microsoft Bookings so that the local phone country prefix is automatically selected by default on the customer booking page.

How to Set a Default Phone Country Prefix in Microsoft Bookings

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Configuring the customer intake forms on a business booking page to streamline appointment scheduling for local clients.
Observed behavior: Customers are forced to select a phone country prefix manually from a dropdown before entering their phone number, and there is no obvious setting to enforce a default local prefix.

Before you start

Ensure you have administrator access to your Microsoft 365 tenant and the necessary permissions to edit the specific Microsoft Bookings calendar.

Solution 1Recommended

Verify Business Information and Region Settings

While Microsoft Bookings lacks a strict setting to lock a default phone prefix, ensuring your business region and time zone are correctly configured is the best way to prompt local defaults.

Microsoft Bookings relies heavily on the overall tenant region and the specific business information configured in your calendar. Making sure these are explicitly set to your operating country may help the system recognize the local context.

Open Microsoft Bookings

Navigate to Business Information

Select the booking calendar you want to edit, then click on 'Business information' from the left-hand menu.

Update Location Details

Verify that your 'Business address' and 'Business phone' are entered correctly with the proper local formatting and country codes.

Check Time Zone

Scroll down to 'Language and time zone' and ensure the current time zone matches your local region perfectly, then click 'Save'.

Verify Business Information and Region Settings

Current Limitations: Microsoft Bookings does not currently provide a standard feature to force a default phone prefix for all customers regardless of their browser settings. If this step does not resolve the issue for your clients, consider the workaround below.

Solution 2

Use a Custom Text Field for Phone Numbers (Workaround)

If the built-in phone number field causes friction due to the required country prefix selection, you can replace it with a simple custom text field.

Solution 3

Seek Assistance in the Microsoft Community

Because this is a known limitation within Microsoft Bookings, checking the official forums for recent updates or backend workarounds can be helpful.

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Frequently Asked Questions

Can I remove the phone number requirement entirely on my booking page?

Yes. You can edit your Services in Microsoft Bookings, navigate to Custom fields, and uncheck the 'Required' box next to the Customer phone number option.

Why does Microsoft Bookings default to the wrong country code?

The booking page often dynamically assigns country codes based on the customer's browser region settings or the overarching Microsoft 365 tenant location setup. If those settings conflict with your actual business region, wrong prefixes may appear.

Does removing the default phone field affect SMS notifications?

Yes. If you choose to use a custom text field for phone numbers instead of the built-in phone field, Microsoft Bookings will not be able to automatically send automated SMS reminders to customers.

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