No connection most of the time. Worse is that your normal calls will start going bad. Dont go for this. This is a scam. Even if you do get a connection, it will vanish before you open one webpage. It will also keep switching back to 3G and 2 G.
Worst customer support. They dont know what this is and they never fix any problem. Voice quaity is worse than in 2G and 3 G networks. I am planning to switch back t 3G