@manueljordan You may want to take a look at the data underlying this API. It was not designed for arbitrary digits with a regex-like pattern. I too would like to be able to specify a format, but my need is mainly for delimiter differences.

Take a look at this file in the project: src/main/resources/en-US.yml and search for phone_number

I'm assuming those formats are common to a non-US country. I did not look into the other configuration files in that directory, but maybe you can get what you need by adding to one of the YML files in there.

Hello @kellerj , yes, I saw that file, sadly in my country the patterns numbers change for each city. It about two important things:

• Size, for my city is maximum 6 digits, in other cities, 7 digits
• The two first numbers varies according the cities, in my city would start with 23, 44, 25, and in other cities with 66, 65.

And even more, would be: (054)-226711 or (051)-2588769

Thus I need set the length or pattern manually (and restrict the two first digits)

Hi, is there an option to generate fake cellPhone() that will contain country code all the time?

Is this feature support to international phone prefix or numbers? I am thinking here of the plus sign.
https://en.wikipedia.org/wiki/List_of_country_calling_codes

You can use a regex directly:

Faker.instance().expression("#{regexify '" PHONE_NUMER_REGEX "'}")

I suggest this one: https://phoneregex.com/