NNS and ICPswap passkey

So I’m just wondering, I obviously have my Internet identity number and whenever I login I enter that plus Face ID on my iPhone. I don’t recall writing down a 12 free pass key like normal wallets on the NNS and ICPSWAP app. I’m just wondering if I get a new phone will this be a problem? I know I’ve logged in onto a laptop on the NNS before.