Default BELL Canada Phone not connecting to 4G/3G in China

Hi guys,

I have an LG G2 from Bell Canada (D803) and I'm currently in China. I bought a 4G data plan from China Mobile which uses TD-LTE. I can sort of understand why I can't connect to the 4G network (is it because the G2 doesn't support TD-LTE??), but I can't understand why I don't even get 3G service. It's EDGE only currently.

Sorry if this is a stupid question. I've spent the last 2 days trying to figure it out by myself but I'm not getting anywhere.

[EDIT] 4G data plan as in a phone number/data plan microsim (not the WiFi hotspots).