Ars Technica describes the ritual that will be required before a future Android device will deign to install apps from somewhere other than the Play Store. It is not for the impatient. Here are the steps: Enable developer options by tapping the software build number in About Phone seven times In Settings > System, open Developer Options and scroll down to "Allow Unverified Packages." Flip the toggle and tap to confirm you are not being coerced Enter device unlock code Restart your device Wait 24 hours Return to the unverified packages menu at the end of the security delay Scroll past additional warnings and select either "Allow temporarily" (seven days) or "Allow indefinitely." Check the box confirming you understand the risks. You can now install unverified packages on the device by tapping the "Install anyway" option in the package manager.