Do new sims get sent out when upgrading to a sim only tariff?

[Cathe]

I'm considering upgrading next month and need a new sim. I've seen sim only tarriff's that suit me but I would need a nano sim and i'm currently using a....I think micro. If I upgrade to a sim only tarriff, would they send me a new sim even though i'm not ordering a new phone? If not - is there a way to buy a nano sim and keep my number?

Apologies if this question is silly. I'm new to this and in the past my upgrades have included a phone so it's never been something I had to think about.

[MI5 · Accepted solution]

They wouldn't routinely send a new sim in that scenario but you could request one for free from customer services or pop into your local O2 shop, again it's free.
https://www.o2.co.uk/help/phones-sims-and-devices/how-to-keep-your-mobile-number

If you get a blank sim from customer services you can also do it yourself here http://swapmysim.o2.co.uk/ 

Just make sure you get a pay monthly sim, not one for PAYG, as they are different.

[jonsie]

Check your present sim, it may be a 3 in 1 sim originally and you can press the nano sim out. Worth checking.

[EmilieT]

Hi @Cathe, I hope the info @MI5 and @jonsie shared above will help you through this upgrade, but please do let us know if you have any additional questions