: Open the downloaded file from your Downloads folder or notification shade and tap Install . The "Interesting Piece": Project Butter
If after all these steps you still cannot use the Play Store, consider these workarounds: download google play store for android 4.1.2
Since Android 4.1.2 is very old, the newest versions of the Play Store will not work. You need a version compatible with API level 16 (Android 4.1+). Trusted Source: to find a version specifically marked for Android 4.1+. Last Supported Version: : Open the downloaded file from your Downloads