Cancelling 30 day contract

[#1]

I'm looking to cancel my 30 day contract with PN and am moving to another provider.

1) do I have still have to give 30 days notice

2) if I do, can I still use the service up until the cancelation date

My 30 day contract renews on the 29th/30th of the month.

[#2]

If you want to switch and keep your existing phone number, text ‘PAC’ to 65075.
Your provider will reply by text within a minute. They will send you your switching code, called a ‘PAC’, which will be valid for 30 days. Their reply must also include important information – such as any charges that you have to pay if you’re leaving