Increase the phone number length validation for Austria. A user has reported that an 11-digit number isn't working, and Wikipedia suggests that numbers can be as long as 13 digits in Austria:
Increase the phone number length validation for Austria. A user has reported that an 11-digit number isn't working, and Wikipedia suggests that numbers can be as long as 13 digits in Austria:

 https://en.wikipedia.org/wiki/Telephone_numbers_in_Europe

Automattic/node-phone,Automattic/node-phone