Add custom format/mask or E.123/E.164 formatting to phone numbers

Currently phone numbers are free text fields where users can enter the number in any format they want. This can cause a range of numbers

It would be useful to have formatting/masking of phone numbers to ensure that they are consistent and in the same format.

For example:

US Phone numbers are 10 characters long (5555551234) and are formatted like this: (555) 555-1234. Applying a mask would allow users to just enter the number and have it be formatted correctly.

Alternatively there are two standards that are applicable that could be used for the format to put numbers in.

E.123 - Wikipedia Article

E.164 - Twilio has an article on it here