What will I be missing for my Pixel 9a?

alecres

I got a pixel 9a and want to switch to graphene OS. I searched on the guide and the web and round out that some services such as NFC paying won't be fully supported.
I post this because I wanted to know what are exactly the unsupported features, if there are any more.
About the pay issue, I did not understand if the NFC still works for other services (for example, I night need it for my ID and other stuff) and what exactly the issue is with paying. I also stumbled upon CurvePay app but did not understand if it works the right way. Also i'm not sure if my banking app supports NFC payment.
And for last: will the camera miss somethibg or work as usual?

iswrong

NFC itself works fine. I scanned my government-issued ID card for the government ID app and my bank's credit card app without issues.

NFC payment also works if the payment provider does not block GrapheneOS. The biggest issue is Google Pay, because they only allow certified Android devices with Google Mobile Services. It's nonsense, because GrapheneOS supports remote attestation and is more secure than other Android phones, but Google is going to Google.

alecres And for last: will the camera miss somethibg or work as usual?

It will work as usual, you can even use Pixel Camera if you prefer.