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Review title: Depends on the Phone
Product review: I've used this product on about 7 phones over that many years with my family. I've tested phones without it and with it in several places of my office, my home, my basement and my back yard. With a couple of the phones it made no impact. With 5 of the phones (LG/Samsung/Kyocera) I got between 1 and 2 more bars. Placement is critical.
