Hi Jerry,
We had problems connecting to Telcel at HC VdJ - very intermittent. I used a USB extension to put my stick outside up in the air and still had problems. The signal there is very weak. I could see towers but they may not be internet towers. Some times of day it worked ok and other times we got nada. I have two PVC pipes 7'6" long and put the stick in a plastic bottle tied to the top of the connected pipes - so about 15' up and over the roof top - and still don't get great reception up there. But it will work at times. You just have to be patient.