Transfer from pay monthly sim-only to PAYG rolling plan

[Sovereign01]

I've been on a SIM-only O2 tariff for years since the handset was paid off and since changed devices and was a great deal at the time, however all of the new sim-only pay monthly deals on offer cost more than my current tariff do because they have far more data.

However, I've found from the rolling plans the cheapest 10GB one would be a few pounds cheaper per month than what I'm paying now and have ten times the data allowance. Is the rolling plan functionally the same as the pay monthly one and if so, how do I transfer my current number to it? The fixed term elapsed long ago so there's no termination fees that I'm aware of.

[Bambino]

@Sovereign01 See this guide: Migration & porting into O2 - O2 Community

If you need assistance: How to find help & contact O2: A Guide - O2 Community

[Sovereign01]

Thanks, I saw the guide and wondered if this meant I needed to buy the separate PAY-G SIM first, and would it come with its own number? Is requesting the migration done the same as going the other way, by dialling 202 or is it different?