If you are on giffgaff or VectoneMobile then you can disable / ‘recover’ / switch your number over the web if you have a backup SIM . Just login to your mobile networks web portal then navigate to UPDATE MY SIM your old SIM can be shutdown and number transferred to your new SIM.
BUT DO NOT FORGET YOUR WEB PASSWORD since password resets are only SMS’d to your OLD / LOST mobile !
VectoneMobile USSD short codes
- *102# = remaining call credit
- *1260# = remaining data allowance
VectoneMobile Access Point Name (APN)
Note : you may need to set this manually if you have a Huawei HONOR KIW-L21 mobile