Q:

How to change phone_number format upon creation of a AWS Cognito User Pool?

I'm creating a new Cognito User Pool in AWS. One of user attributes is phone number. User Pool documentation states that phone number format must start with a plus sign (+), something like "+14325551212" for United States. But what about other countries formats. I've tried with Brazilian format and got the following error: "Invalid phone number format". 
So, do only US numbers allowed ?

A:

I am on the Cognito team and we recently deployed a fix that should take care of this issue. So those phone numbers should work now.

