User Phone Numbers

This article will discuss different topics around your users’ or customers’ phone numbers - if you’re looking for information about your own numbers, please go to our article on Short & Long Codes.

Phone numbers are shown in the User Profile in local formats, but will not be in the format you use to import the number ((724) 123 4567).

Importing Phone Numbers

You can import phone numbers by uploading a CSV or via API to create a user.

Formatting

As a best practice, the best way to import a phone number is in E.164 format. However, Braze will attempt to interpret or convert any U.S. number to the best of our ability.

All U.S. numbers must be valid, 10-digit phone numbers with a valid area code. They can be inputted without the + and country code, as Braze will assume and map all valid, 10-digit phone numbers as U.S. numbers.

All international numbers should start with a +, followed by their country code and then the phone number. (e.g +442071838750)

e164

However, to ensure accuracy in the event that you are sending to multiple regions with different country or area codes, it is recommended to use the E.164 format, even for U.S.-based phone numbers.

You can see the differences between local number formatting as well as universal, E.164 formatting in the table below:

Country Local Country Code E.164
USA 4155552671 1 +14155552671
UK 2071838750 44 +442071838750
Brazil 1155256325 55 +551155256325

Adding Users to SMS Subscription Groups

For a customer to receive an SMS message, they must have a valid phone number and be opted-in to a Subscription Group. Subscription Groups are tied to the SMS program you are running (make sure you follow the legal laws for SMS and have recorded consent for each customer). For more information on SMS Subscription Groups, check out our documentation.

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