I would, if not for a combination of a few factors:

Firstly, I currently own an S22 that can’t be unlocked, but I’m loathe to trade away a perfectly good phone so soon.

Secondly, Pixels (which seem to be the best supported in the custom ROM scene?) are still kinda shit hardware wise. At minimum they need a proper ultrasonic fingerprint sensor before I consider switching.

And finally, I don’t have a strong enough motivation to switch.

I’m concerned about my privacy, yes, but at the same time I really don’t do anything interesting with my phone. Most of my computation happens locally on my Linux desktop, far out of reach of any prying eyes.

And it’s not like they can use what little information they can harvest for anything, since all my devices are juiced to the gills with adblockers.

It’s so nice to see folks here moving away from Google. I hope I can get there too.

I would, if my Samsung phones didn’t have locked bootloaders.

I use GrapheneOS on my Pixel 5, even though I didn’t want to use Custom ROMs anymore.

I run it mainly because of sandboxed Play Services (i. e. Google services running as a user application with much less capabilities, instead of a system application, like with the factory image) and the additional functionality, which includes the ability to revoke network and sensor permissions for any app.

One of the reasons I decided to flash it, instead of remaining on the factory image, was that it behaves like the factory image once it is installed. Meaning the bootloader is closed and I don’t have to ever worry about updates (manually flashing the latest firmware files or the latest gapps, etc.). It even has automatic system updates, meaning it installs system updates whenever I am not using the phone. So while I’m asleep my phone is updating itself and the next morning I start the day with the latest GrapheneOS release. Very convenient!

I still download apps primarily from the Play Store (auto updates also work for those apps!) and use F-Droid only for apps that aren’t available there (due to F-Droid signing most apps with their own key). But, since the Play Services and the Play Store run as a user app, I am at least able to take all permissions away from them, which should reduce the amount of data that can be collected by them.

There are drawbacks though, one of them is the lack of Pixel features. Those missing features include adaptive charging and sound output improvements, which results in degraded speaker quality on GrapheneOS, especially with newer Pixel phones (verified on a Pixel 7).

In the future I hope to ditch Android altogether on my main phone and switch to a Linux phone (and have a cheap Android phone, or a compatibility layer, for disrespectful companies, like banks or EV charging providers, that force me to install an Android or iOS app), but I haven’t seen the right Linux phone hardware for me yet. I plan to replace my Pixel 5 when Android 15 releases (as Android 14 is the last major update for it), so maybe I can switch to a Linux phone by then. :)