Buying a device directly from Samsung may be different, but the manufacturer still has to usually convert the pure android update to their branch.
Still, trying to find a pure android phone is important. More manufacturers used to make them.
Example: https://www.androidauthority.com/best-smartphones-stock-andr...
Says September is the latest system update. Click check updates, says it's up to date, click check updates again, says it's preparing system update and hangs out for a while - then says it's downloading and installing a 781M update.
WTF?
Update: OK finally the update completes an hour later, even the reboot took longer than usual - says it's "updated to December 5, 2025"
This phone running Android 16 for a bit over a month now.
Fun fact: Pixel 7 and Pixel 7 Pro didn't get a November update
Very old, unpatched and rooted devices can fairly easily pass device integrity check.
It primarily assures the software vendor that the phone is running Google buttplug in the privileged mode.
Remember, handsets running on ANCIENT versions of Android with no patches for years. Whilst seems to be important to raise under the Forbes article (rightly) fussing about a couple of zero-days.
"Custom roms" (whatever that means) can easily spoof the checks in the specific situation (mainly hardware that allows for several things).
Rumor is the Pixel 7a December update rollout was paused due to a severe wifi bug. You might not want to upgrade manually at this time, even if you find images available for download.
(The rumor is somewhat weak, it's apparently everyone regurgitating one seemingly AI chat.. Google needs to state the reason publicly.)