I have gone thorugh lot of blog for searching how to format and mask number for mobile phone.

Get dial code and phone number from International Telephone Input using jQuery

$("#phone").intlTelInput({
    autoHideDialCode: true,
    autoPlaceholder: "ON",
    dropdownContainer: document.body,
    formatOnDisplay: true,
    hiddenInput: "full_number",
    initialCountry: "auto",
    nationalMode: false,
    placeholderNumberType: "MOBILE",
    preferredCountries: ['US'],
    separateDialCode: true,
    utilsScript: "~/js/utils.js"
});