Easiest installation cell phone signal boosters are the ones that require no exterior antenna. Therefore, no going outside nor on the roof for installing antenna. This makes it very easy to install them. While extremely easy to install, they do require good signal atleast at one spot inside the house or building. The reason for that is the the donor antenna of cellular amplifier that is included needs some signal to amplify and broadcast indoors. Please contact us if you have any questions and we will be glad to help!