Phone Number.To

1 Clean the input: We start by removing any non-digit characters from the input string. ... 2 Match parts: We then use . ... 3 Format and return: If the input string matches the pattern, we format it by inserting parentheses and a dash in the appropriate places. noun. : a number assigned to a telephone line for a specific phone or set of phones (as for a residence) that is used to call that phone. called also phone number. Someone's mobile number is the series of numbers that you dial when you are making a telephone call to their mobile phone. Mobile phone numbers are often associated with mobile plans that include calls, SMS and data. They also allow access to advanced features such as internet access, instant messaging, mobile apps, etc. Landline phone numbers are often used for residential or commercial phone lines.