I regularly find my 4G is faster than friends' fixed broadband. It's often not worth connecting to the WiFi. The one problem is contention. Mobile networks may

I regularly find my 4G is faster than friends' fixed broadband. It's often not worth connecting to the WiFi. The one problem is contention. Mobile networks may give you full signal but they'll have under-provisioned the back-haul and won't connect you. Very annoying when this happens. I used to have unlimited data on 3G but couldn't find a 4G package which offers this. I'm sure it isn't a technical limitation as it's available in the far east.