RegEx for valid international mobile phone number

Question

I use Clickatell to send SMSes to clients  mobile phones   Is there a standardised regular expression for all valid mobile phone numbers  e g   27 123 4567  I d roll my own  but I m worried about missing an obscure  valid phone number format

User · Answer

Posting a note here for users looking into this into the future   Google s libphonenumber is what you most likely would want to use   There is wrappers for PHP  node js  Java  etc  to use the data which Google has been collecting and reduces the requirements for maintaining large arrays of regex patterns to apply

User · Answer

Even if you write a regular expression that matches exactly the subset  valid phone numbers  out of strings  there is no way to guarantee  by way of a regular expression  that they are valid mobile phone numbers  In several countries  mobile phone numbers are indistinguishable from landline phone numbers without at least a number plan lookup  and in some cases  even that won t help  For example  in Sweden  lots of people have  ported  their regular  landline-like phone number to their mobile phone  It s still the same number as they had before  but now it goes to a mobile phone instead of a landline   Since valid phone numbers consist only of digits  I doubt that rolling your own would risk missing some obscure case of phone number at least  If you want to have better certainty  write a generator that takes a list of all valid country codes  and requires one of them at the beginning of the phone number to be matched by the generated regular expression

User · Answer

Regex - Check Singapore valid mobile numbers  public static boolean isSingaporeMobileNo String str        Pattern mobNO   Pattern compile      0        65  -                  65     -         8-9   d 7            Matcher matcher   mobNO matcher str       if  matcher find              return true        else           return false

User · Answer

Even though it is about international numbers I would want the code to be like            d  0-9  7 16       As you can have international numbers starting with  00  as well   Why I prefer 15 digits   http   en wikipedia org wiki E 164

User · Answer

After stripping all characters except     and digits from your input  this should do it       1-9  1  0-9  3 14     If you want to be more exact with the country codes see this question on List of phone number country codes  However  I would try to be not too strict with my validation  Users get very frustrated if they are told their valid numbers are not acceptable

User · Answer

1-9  1  0-9  7 11      The Regular Expression      1-9  1  0-9  7 11    fails for   290 8000  and similar valid numbers that are shorter than 8 digits   The longest numbers could be something like 3 digit country code  3 digit area code  8 digit subscriber number  making 14 digits

[regex] RegEx for valid international mobile phone number

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