Important Note Before You Start:
Android 2.1 was released in 2010. The official Facebook app stopped supporting this version many years ago. You cannot download the modern Facebook app from the Google Play Store on this device.
Your only option is to find an old, legacy version of the Facebook app. These versions will have limited functionality, many bugs, and potential security risks.
Important upfront: Android 2.1 (Eclair) is very old (released 2010). Current Facebook app versions require much newer Android releases, so you cannot install the modern Facebook app from the Google Play Store on Android 2.1. Below are practical options and constraints.
When Android 2.1 was released in January 2010, smartphones were very different. Screens were smaller, processors were slower, and the Facebook app was a fraction of the size it is today.
Over the years, Facebook (and Meta) has updated the app to require: download facebook app for android 2.1
Android 2.1 is an operating system from 2010. The modern Facebook app you see today requires much newer hardware and software to function. If you try to download the current version of Facebook on Android 2.1, it simply won't install.
To use Facebook on this system, you need an older APK version of the app—specifically a version released around 2011 or 2012.
Since the Google Play Store likely won't let you download compatible versions automatically, you will need to sideload the app using an APK file.
Prerequisite: Before you begin, you must enable installation from unknown sources on your phone. Important Note Before You Start: Android 2
Where to find the file: You can search reputable APK repositories online (such as APKMirror or Uptodown) for "Facebook for Android." You will need to look for version numbers around 1.5 to 1.9.
Installation Steps:
You need a version of Facebook that was built for Android 2.1. Generally, versions of Facebook from late 2011 to early 2012 are the "sweet spot" for stability on Eclair.
You will need to search the web for "Facebook APK Android 2.1". How to download the Facebook app for Android 2
Since Android 2.1 devices often have very limited internal storage, ensure you have a MicroSD card installed if possible.
If you are trying to download the official Facebook app for a device running Android 2.1 (Eclair)—released in early 2010—you have likely run into a major roadblock. The short answer is: The modern Facebook app no longer supports Android 2.1.
Here is why, and what your options are today.