For devices running Android 5.1 (Lollipop) , the standard Facebook app is no longer officially supported, as current versions typically require Android 8.0 or later . To access Facebook on your older device, you should use Facebook Lite
If you are trying to install this APK manually: facebook para android 5.1 version antigua
Since newer versions of the main Facebook app won't install on Lollipop, you have to look for versions released around 2017–2018. For devices running Android 5
| Método | Ventajas | Desventajas | |--------|----------|--------------| | | Notificaciones push, carga rápida | No todas las funciones modernas | | Facebook Original (App vieja) | Interfaz clásica | Inestable en Android 5.1 | | mbasic.facebook.com (Web) | Cero instalación, funciona hasta en Android 2.3 | Sin notificaciones, diseño de los 2000 | | Frost (App alternativa) (F-Droid) | Ligera, código abierto, modo nocturno | No oficial, puede bloquearse | When battery below 20% : Option 3: The