Access your first fb account with this app. After this, get the Facebook lite app from google play store. This app was launched by facebook in 2015. This app consumes less data when compared with the official app. With this app, you can access the second fb account. Obviously, there is a difference in the user experience between two apps. Facebook lite responds well with the 2G network. Check the security settings well before accessing the app. You can save the videos for future viewing. If you want, you can hide some posts and also unfollow them.
If you want to save data, you can unfollow the person who is sharing the unwanted things. You can save battery if you view facebook through chrome. As app is always performing, it can feed on your battery. If you want to mute any friends' message or notification, simply follow this path Facebook App >Messages and select the friend you want to mute. Same thing you can do incase of notifications.You can also disable notifications by unticking the notifications in the settings. You can also enable two steps authentication by going to app settings and checking the login approvals. Proceed the instructions and enable two-step verification process.