Open your phone's folder or use a file manager app. Tap the downloaded APK file and select Install . Known Limitations and Alternatives
Before downloading the file, you must configure your device to allow installations from outside the Google Play Store. Open the app on your Android 2.3.6 device.
The most stable version of the standard app confirmed to support Android 2.3 (API 9) is Version 23.0.0.20.13 .
Downloading Facebook Messenger for Android 2.3.6 (Gingerbread) is challenging because
: Another reliable source with an extensive version history. Step-by-Step Installation Guide