Hello all, I travels mostly underground and that's when I expect my phone to be working properly , surf net and entertain myself becuz that's everyday and i got a rather long distance to cover. The point is, once my HTC HD7 3G isn't working once i'm underground. It appears that other phones BB, iphone users seem to be able to surf net. Has any of you been experiencing this problem ?? Internet browser keep saying dns error blah blah blah. Facebook apps saying there's no internet connection in fact there's and i can still see the network bar on top and it's just good. Is there anyway to increase the network antenna usage or some sort so that it will be able to cover a wide range of area or something like that so i can surf net underground but not ya know read some pdf file offline.