When phone numbers are imported in from other Contact Page (COP)'s, sometimes the user does not know if their number is a cell phone or landline.
So, sending them text messages won't quite work because it could go to a landline.
Create a feature that automatically checks numbers to verify if the number in the field is actually a mobile number or a landline. than update the field and move it to the appropriate field.
saves us on spending text message units and only marketing to those that are mobile friendly clients or prospects.