Huge impact - like having a 4 foot antenna on your cell phone. 2) Improves Reception, Reduce Static in boats, elevators, cars, buildings, tunnels, and mountains. 3) Works on any Analog, Digital, and Tri-band phones.
Open the back cover of the phone, take out the battery, and wipe the area where the phone signal sticker is attached with a cloth. Then gently remove the signal enhancement sticker from the jam, and stick the "UP SIDE" on the signal sticker toward the antenna of the mobile phone. Close the battery and back cover.