Telephone number format should be international,Is there any Regex for phone number validation in iPhone

Question

Telephone number should be international and user has to enter the complete phone number with country code.

For that I need a regex for formatting the phone number.

Answer 1

For real regex testing use RegexKitLite.

As for the regular expression itself, something like this (from Validate Phone Numbers: A Detailed Guide) should work:

^\+(?:[0-9] ?){6,14}[0-9]$

Note that when you specify it in your code you need to escape the backslash character (\), so it would look like this:

NSString *regexString = @"^\\+(?:[0-9] ?){6,14}[0-9]$";