SIM card change

[CLF22]

I have upgraded, and also changed my tariff to unlimited date, supports 5G, and to get Disney + free for 6 mths. 

Do I need to use the SIM card my upgrade came with to get the new benefits? Or will they be automatically applied if I just put my current sim into my new upgraded phone? 

[Bambino · Accepted solution]

@CLF22 Your current sim will only support 4G, so if you want the 5G benefits you'll need to do a sim swap:

SIM Swap: a mini guide (incl eSim) - O2 Community

If you're not comfortable doing the swap yourself, call into an O2 store if you have one nearby and they'll do it for you. Be sure to bring identification with you.