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We guarantee that the Cel-Fi™ will provide great T-Mobile coverage. If you are unsatisfied for any reason just return the kit to us and we will refund 100% of your purchase. Try the Cel-Fi™ risk free!
Use your mobile phone to find the location with the best 3G signal (look for the 3G icon on the display of your phone). This is usually next to a window, and upstairs locations tend to be better than downstairs locations. Once you have found the best 3G signal, place the Window Unit in that area and plug it in. You should notice the green bars which indicate your signal level. The more bars shown the better service you will get, so try moving the Window Unit to a couple of different spots to see where you get the most bars.