How do you mean upgraded @Sn00py? Have you taken out a new deal? If you upgraded, then the new deal is on your current sim and there is no change to your number. If you took out a completely new deal (a new line) then yes there is a new number. Where and how did you upgrade?
Please note, this is not customer services and we cannot access your account. Do not publish personal details (email, phone number, bank account).