Search for (highly recommended over standard Facebook).
When looking for an APK for Android 5.1, only download from the official Google Play Store official Facebook website
: Modern applications demand significant RAM and processing cores, causing older devices to crash or freeze.
It is designed to run efficiently on devices with less than 1GB of RAM.
As of early 2026, official support for the standard Facebook application has shifted to newer operating systems: Standard Facebook App : Now typically requires Android 6.0 or greater apk facebook android 5.1
Do you prefer the or a faster, lightweight app ? Are you currently encountering a specific error message ? Share public link
You cannot easily run the standard, fully updated Facebook app on Lollipop. However, you have two excellent workarounds. 1. Facebook Lite (Recommended)
If you decide to proceed with sideloading the APK, follow these steps carefully:
Open your mobile browser (such as Google Chrome) and navigate to a trusted, verified APK hosting repository. Highly reputable sites include , APKPure , or Uptodown . These platforms manually verify cryptographic signatures to ensure the files have not been modified by malicious third parties. Search for (highly recommended over standard Facebook)
Facebook Lite is a separate app designed specifically for older phones and low-bandwidth networks. It retains the core social features without the extra resource requirements, which makes it the superior choice for Android 5.1 devices. It works on "almost all new and old Android phones," uses less data and storage, and is fast even on a 2G connection. The APK for Facebook Lite is also dramatically smaller, taking up only about 3 MB of space instead of the nearly 82 MB that the full app requires.
Open your file manager, locate the downloaded .apk file, and tap on it to install.
This comprehensive guide covers how to safely locate, download, and install a working Facebook APK for your Android 5.1 device. Why You Need an APK for Android 5.1
If you are using a device with Android 5.1, here are your best options: Facebook Lite for Android - Download the APK from Uptodown As of early 2026, official support for the
Because Facebook Lite is built specifically for developing markets and legacy hardware, its official support for older Android operating systems lasts much longer than the main app. Essential Security Practices for Legacy Android Users
This change reflects a broader industry trend. Major apps periodically drop support for older operating systems to reduce development costs and focus resources on newer platforms. In fact, Meta recently announced that WhatsApp will also cease functioning on Android 5.0 and 5.1 devices starting September 8, 2026, requiring Android 6.0 as the minimum supported version. This suggests Facebook may follow the same timeline.
You may have a conflicting version of Facebook already installed, or your device ran out of storage space.
Before downloading, you must understand the hardware and software constraints of running modern social media on older architecture: