Hello guys today I am doing review of facebook mobile app first of all I will say that you cant message anyone without installing messenger app even you cant read a single message some low ram mobile cant handle messenger as it runs in background I will suggest you to use facebook web page in your android/ios phone as there you can also message anyone without installing messenger app an also the web version is also faster if web version is not suitable for you then you can download the facebook lite from google play store or app store but fb lite version does not support reactions feature and also the app look is very old but it runs faster than the facebook app and fb lite app is also less than 1 mb and I will suggest you to use fb lite or fb web version because they can be run faster even in 2g network