String phoneNumberE164Format = "+14167129018"
PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();
try {
PhoneNumber phoneNumberProto = phoneUtil.parse(phoneNumberE164Format, null);
boolean isValid = phoneUtil.isValidNumber(phoneNumberProto); // returns true if valid
if (isValid) {
// Actions to perform if the number is valid
} else {
// Do necessary actions if its not valid
}
} catch (NumberParseException e) {
System.err.println("NumberParseException was thrown: " + e.toString());
}