Not sure if anyone else is having this problem.
The Facebook App on my iphone is currently not working when I am using mobile data on Smartone. My feed does not update and I can't see any videos or notifications.
It is fine as soon as I get home onto my home wifi or when I am in China and using roaming data.
Funnily enough, it is only the Facebook App that doesn't work, I can navigate to Facebook.com on Safari and use that without any problems.