How to disable camera → Google Photos sync on Android 9? Similar to this, but Google has somehow wormed their way around my settings:


Photos → Settings → Backup &amp; sync is off.
Photos → Device folders → Camera → Back up (sic) &amp; sync is off.
Camera → Settings → Data storage is set to "Save picture to phone."


Even so, this morning I got a creepy reminder that Google Photos has my image, and that they have "helpfully" post-processed it. Short of breaking my phone in half (or rooting it), how do I stop this from happening?
The easiest option (and maybe hence easiest overlooked) is disabling the Google Photos app altogether (in Settings › Apps make sure you show "all apps", scroll to Google Photos and tap the "disable" button).

Revoking storage permissions from this app cannot hurt (who knows what might still invoke one of its intents; still in Settings › Apps tap the "wheel" icon in the upper-right corner, select "Permissions", then "Storage", scroll to the app, and toggle it off; you might have to do that before disabling the app as afterwards it might no longer show up here).