nostr:npub1qny3tkh0acurzla8x3zy4nhrjz5zd8l9sy9jys09umwng00manysew95gx did a great guide for graphene on a pixel 3a that I used a while back. Should be mostly the same. Worth a watch for the process at a minimum.

https://m.youtube.com/watch?v=oO0UFZjuotg