Upgrade unlocked

[Ste]

So I’m thinking of upgrading had an iPhone 7 for like 4 years now and have been put off upgrading because of the high prices.
So I’m thinking iPhone 11 but I currently have a good deal with virgin on a sim only deal which is unlimited everything so would I be able to upgrade to an 11 and then use my virgin sim or are phones locked to the network they were purchased off
Thanks ste.

[MI5 · Accepted solution]

@Ste 

O2 do not lock their phones anymore but your upgrade would come with an O2 tariff which you'll have to pay for unless you buy the phone outright.

[Ste]

Yeah well was gonna pick the cheapest tariff like 1gb it still works out cheaper then o2 unlimited tariff if that makes sense thanks for the reply.
Was thinking of texting 02 to see if company is on that o2 discount do they still do that

[Ste]

Sorry last question does the phone lock to virgin if I use that sim or does it stay unlocked as well

[MI5]

@Ste 

An unlocked phone will always be unlocked, regardless of what sim is used so it's OK to swap between your Virgin and O2 sim cards.

Details of O2 discount schemes here Guide: O2 Open & Friends and Family discounts - How to sign up