Post [Q] LG E612 - how to know whether it works in 3G or 2G

Hi, I am not sure whether this is the right forum to raise this. If not, pls guide to right one. I am using LG E612 mobile and I have enabled 3G. How to find out whether it works in 3G or in 2G? When I called LG customer care, they say that LG E612 does not have any display to identify the same. Does anyone know?