Transferring Text & Web PAYG to a new SIM

[Anonymous]

I just bought a Samsung Galaxy A5 with the intention of using my old SIM with it so I could keep the tariff I'm on (and happy with), but I've just realised it takes a nano SIM, not a normal sized one. 

Is there any way I can transfer my Text & Web tariff over to my new SIM the same way I could do with my old number? The new style of tariffs seem like a bad deal to me, where once your 'free' allowances run out after a month, you're left with no credit. I can usually make a tenner stretch 2 months at least, the first on the allowances, and the second using up the actual credit.

Thanks

[Anonymous]

Thanks guys, that's really helpful :). It seems to have worked with my tariff and credit, but my number hasn't been swapped over. Is there a separate form for that?

And thanks, I'm really loving my new phone so far - it's so much faster than my old HTC One V!  

[Cleoriff]

Hi @Anonymous Here you go...

http://swapmysim.o2.co.uk/

[MI5]

It should all change over at the same time.
Are you sure your number hasn't changed too?

[Anonymous]

On your home screen, there will be an icon call contact. Open that, your number should appear as under your contact card details or there maybe one saying my number, that should tell you the number that you are using 

[MI5]

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@MI5 wrote:
It should all change over at the same time.
Are you sure your number hasn't changed too?

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I ask because if you look in about phone, the number displayed there will be whatever is on the sim and not necessarily the number in use.