I have no problems with your #1 so I am not sure what to say in that regard.
#2: I am not sure what the browser fix so perhaps you could shed some light on what you did there.
3 and 4 will not work. But you can access facebook through its mobile site.
5. Google Maps works beautifully on mine.
So perhaps I would try doing a battery pull to see if any of these are corrected by doing so.