[Dr. Franklin]

Then, head back to your primary Settings screen and scroll down. You should see a new “Developer options” section near “About phone.” Tap on it, and then look for the “Automatic system updates” option. Make sure it's not enabled. That should prevent your phone from receiving automatic updates. But to be super-super sure, you can also purchase and sideload the Package Disabler Pro app. You'll then use this to disable your device's Software Update feature, which will keep it on the current version of your operating system forevermore.

In mine, I "System and Updates" then appeared on the main setting menu above about phone. In that is "Developer Options" which has the switch for "Automatic System Updates" which can be switched off. Thanks for the info!

[TruthWillWin]

In mine, I "System and Updates" then appeared on the main setting menu above about phone. In that is "Developer Options" which has the switch for "Automatic System Updates" which can be switched off. Thanks for the info!

On mine after tapping on the build number numerous times the "developer options" appear on the bottom of the settings screen.