If you provide the Android version you're running, I can offer more tailored troubleshooting or suggest other lightweight alternatives! Share public link
: A more data-efficient alternative for low-end devices.
If your goal is simply to save storage and battery life on an older phone, Meta offers an officially supported, optimized alternative called Facebook Lite . This version is actively maintained, secure, and specifically designed for low-resource environments.
(often recognized in the format 51.0.0.x.x) is a specific, older iteration of the official Facebook app for Android. Released historically around 2015-2016, this version is often sought out by users running Android 4.4 KitKat, Android 5.0 Lollipop, or early Android 6.0 Marshmallow devices.
. This version typically requires Android 11 (API 30) or higher to run. Legacy Version (Android 5.1): If you are looking for an APK compatible with Android 5.1 (Lollipop) facebook apk 51 1 exclusive download
: Keep your applications updated automatically to ensure you always have the latest security patches. To help secure your device, let me know: What device model are you currently using?
Some "exclusive" download buttons do not even give you a file. Instead, they redirect you through a chain of dangerous websites designed to steal your personal information or credit card details.
Android applications use specific numbering systems to track updates. A version number like "51.1" dates back several years. For context, Facebook releases hundreds of updates annually, and current versions are numbered in the late 400s or 500s.
Before installing an APK from outside the Play Store, you must grant permission: If you provide the Android version you're running,
| Pros ✅ | Cons ❌ | | :--- | :--- | | Access when Play Store is restricted or geo-blocked | Significant security risk of installing malware or spyware | | Ability to install older versions (if you prefer a previous UI) | Potential for account compromise or data theft | | Can be used on devices without Google Play Services | No automatic updates; you must manually download and install each new version |
If you specifically require an older version for compatibility reasons:
When a website promises an "exclusive download" for an outdated app file (APK), it is usually a psychological trick. They are trying to create a sense of scarcity or mystery to make you click.
While Messenger eventually became a separate app, versions around 51.1 still allow for efficient, integrated messaging capabilities without requiring a completely separate, heavy app. Photo and Video Uploading: Fast and reliable media sharing. For newer devices
This is the only way to guarantee you are downloading the official, safe, and up-to-date app directly from Facebook. All you need to do is open the Google Play Store on your phone, search for "," and tap Install . For the latest version, the file size is significantly larger than 51.1 MB, currently around 79.4 MB .
While downloading a historical APK solves specific hardware issues, running older software on modern networks introduces distinct technical limitations. Server-Side Depreciation
, the official Facebook app no longer supports this OS. However, archived versions like Facebook 148.0.0.51.62 were specifically built for Android 5.1+ devices. Recommended Download Methods
If you live in a region without access to the Play Store, only use download links hosted directly on Facebook's official website or Meta's verified developer portals.
If your device runs Android 4.0.3–4.4, this APK may be one of the last compatible builds. For newer devices, upgrading to the latest Facebook version from the Google Play Store is strongly recommended.