Now came the dangerous part. To install an APK—a file from outside the official store—he had to bypass the phone's security. He went to Settings > Security . There, grayed out but toggleable, was the option: Unknown Sources .
Some key features of the Play Store APK for Android 4.1.2 include:
Then he found it: a forgotten forum post from 2013, buried under layers of dead links. The title read: