New Classic activation or number swap - advice needed please

[somebody]

Hi- I have various potential options I'd like to explore.

I have a couple of new unused unactivated Classic 3-2-1- payg sim cards.

I also have a phone with an already activated Classic payg sim card, with about £11 credit.

My wife currently has a Giffgaff sim and number, but is wanting to switch away from this, but ideally keep her number. Bearing in mind that the Classic tariff is "not available" anymore, I think she has the following potential options:-

1) Abandon her old phone number, and just tell people her new number is  xxxx and then use the already activated Classic sim with the £11 credit, with its existing number.

2) Try and port her current number to an unused Classic sim, activate and then top up with M/M £10. Would this work, or would the new activation onto Classic fail, as it's no longer available? If I port her number across and then find it won't allow the Classic tariff, then I've wasted my efforts.

3) Port her current phone number across onto the already activated Classic PAYG sim, and lose the £11.00. Would this activate as the Classic tariff?

Those are the options I see - can anyone comment on what is likely to work or not work? Thanks

[MI5 · Accepted solution]

@somebody 

No new connections are allowed after Nov 29 2019 to the classic tariff so this option would fail, however, she can request her PAC from giffgaff and port her number to the already active sim. You will not lose the credit either.

[somebody]

So porting her number to the already active SIM will preserve both the tariff and the credit? Win - win, that'd be my perfect solution. Have others already done similar and confirmed success since November?

[MI5]

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@somebody wrote:
So porting her number to the already active SIM will preserve both the tariff and the credit? Win - win, that'd be my perfect solution. Have others already done similar and confirmed success since November?

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That is correct. The tariff and credit on the ported to SIM will not change. Only the number.