One of the problems when one is using facebook is that the app freezes as soon as you open it. This is very cumbersome as one cannot use the social networking site at that point in time till this glitch is rectified. There can be a few reasons for this happening.
For one, it can be that the internet connection is weak. For rectifying this, you will have to opt for a stronger signal or a stronger connection.
Also, it can be that there is not enough free storage space in your disk. Then, the app may crash as soon as it is opened. Hence, free some storage space on your computer or your cell phone, and restart the app.
It can also be that the app may freeze due to some technical problem in the device. This is pretty simple to repair. Just restart your system again and retry to start the app. There is a good chance that it will work this time.
And lastly, the problem again could be some error in the system. To rectify this malady, uninstall the app. Then go in for re-installing it. Whatever the glitch, this method would, in all probability, rectify it.