Sollomun

If the phone number is invalid, it means it is not active. It's straightforward... If you need this number, then try to restore it. To do this, you need to contact the provider's company. But it may also happen that your number has already been given to another person because you have not used it for a long time. When I lived in Liverpool, I changed several numbers because they were all invalid... Then I decided to switch to temporary phones. After all, I don't need a permanent phone number, and you can always receive sms uk with a temporary one.