number change over

[jellyfish]

I got a new sims free contract but i wanna keep my old number.
How do i keep my old number on my new monthly contract?

[Cleoriff]

@jellyfish 

If you were on contract before, just use your old sim.

Otherwise follow the advice here https://www.o2.co.uk/help/phones-sims-and-devices/how-to-keep-your-mobile-number