Most major phone carriers allow subscribers to change their phone numbers at any time. However, the change may cost a small fee and take a certain period to materialize.
Some telephone carriers give their customers the chance to change their phone numbers. A subscriber may request for a change of his or her by contacting his or her respective carrier via a phone call or any other available online communication avenues.
Changing of a phone number causes total loss of voice mails. In addition, the subscriber may not have the chance to reverse his or her new phone number to the previous one once the change is effective. In short, changing of a phone number is may or may not be available depending on the subscriber's telephone carrier.