cant enter my phone number to iphone
I have an iPhone 4s that was recently unlocked. everything is up and running - I think - but I can't add my phone number to the settings.
Under settings I go to PHONE and MY NUMBER - which currently reads - Unknown
when I try to add my phone number I get a message saying "Phone Number could not be saved"
why not? and how can I get it to add? furthermore, is it important?
Thanks
iPhone 4S, iOS 7.1.2, unlocked