Huge impact - like having a 4 foot antenna in your mobile phone. Improves Reception, Reduce Static in boats, elevators, cars, buildings, tunnels, and mountains. Works on any Analog, Digital, and -band phones. Eliminate dropped calls. Easy to install, smoothly and keep on with the inside of your battery compartment. Name: Mobile phone network signal booster Applicable: Universal Product Type: Sticker Sticker type: Partial decoration Function: develop cellphone sign Colour:gold+black Material:metal patch Package Contents: five x Cell Phone Signal Sticker Only the above package content, diverse products usually are not included. Note: Light mirrored image and assorted reveals can cause the color of the item in the photo somewhat diversified from the genuine thing. The size allowed error is +/- 1-3cm.