This booster will not give you any signal where you have none. What it will do is improve the signal you already have. I have found that it boosts your signal strength by about 3 to 5 bars. For example, if you have a signal of 1x with one bar, you would get boosted to 1x with four bars or possibly as much as 3G with one bar. That is what it does. 3 to 5 bars of improvement. Again, if you have no signal where you are attempting to use this booster you will still have no signal with this booster. It only boosts the signal you already have. It works well and has boosted my 1x signal to 3G in places, and my 3G to 4G in others.
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