upgrading - SIM only

[Downsey]

I currently have a SIM only deal paying £25 per month for 45gb. It is upgradable.  So if I "upgrade" to a different SIM only deal (in MYO2  but via uswitch)  will the new one just take over and cancel the existing or do I need to cancel the existing first?

[Enlli · Accepted solution]

Providing you are out of the minimum period on your present deal the you can upgrade via O2 or USwitch and that will take over