I've used GrapheneOS on a Pixel 3a, 5, 8 and 10 Pro so far and it's worked really well. I couldn't imagine going back.

The only things I'm missing (which don't exist in other OS'es either):

- Being able to configure contact scopes in such a way that the app in question only gets access to the phone numbers of the contacts belonging to the label I specified, e.g. "WhatsApp", nothing more. Yes, one can of course add contacts' phone numbers to the contact scopes "by hand" but 1) there is a limit on the number of contacts/phone numbers configured this way, and 2) AFAIK there is no way to back up that list.

- Being able to install browser extensions in Vanadium.

- Being able to configure multiple VPNs at once, e.g. for Tailscale, ad filtering, blocking HackerNews during times when I should be doing something more productive :) etc., especially since the Vanadium browser doesn't support extensions (see above). I was hoping that the Rethink app might implement something like this (https://github.com/celzero/rethink-app/issues/1047) but it doesn't look like it's coming and it'd probably be much better to do this at the OS level.