Because you are not using the Google Play Store, you must allow your phone to install apps from third-party sources.
Includes core functions like the news feed, photo sharing, and notifications, but in a package as small as 2MB to 3MB . Legacy Facebook App Versions facebook apk android 412
However, "old" doesn't mean "obsolete." By using the right , you can still access your newsfeed, message friends, and share updates. This guide covers everything you need to know about finding and installing the best version of Facebook for your legacy device. The Challenge of Android 4.1.2 Because you are not using the Google Play