title: Validate a phone number?
body: <p>What are the condition to validate a phone number?</p>
  
  <p>Well firstly it has to be a numerical value, can include the following numbers
  0123456789 and the plus symbol. +</p>
  
  <p>But what about the following conditions, where do you get this data?</p>
  
  <p>-It has to be in the format [country dial code + area code + phone number]</p>
  
  <p>-It has to be a min and max length</p>
  
  <p>EDIT: also what is the min and max length of a mobile/cell phone number?</p>