Does the cell phone booster really work

Principle
A cell phone antenna booster works by picking up the weak signals given off by the service provider's towers & amplifying the signal for the cell phone's antenna to improve its performance. This happens by capturing the energy found around the phone & funneling it in to the signal, which should improve the reception. Cell phone antenna boosters are likened to a broadcast tower in that they rebroadcast the signal within a particular area. For more advanced versions, numerous cell phones can make use of the same antenna booster.
Design
There are plenty of products obtainable on the markets that are promoted as cell phone antenna boosters. Most are small devices that can be installed internally to the back of the battery pack or externally to increase the signal produced & captured by the phone. The principle behind plenty of of these products is to increase the surface area for the sending & receipt of messages the way a satellite dish would. they are designed to be narrow & lightweight so they can fit in to the phone without adding bulk or weight. There are some cell phone antenna boosters which come in the form of stickers that are placed on the phone itself. However, their effectiveness is not proven & is controversial.
Direction
six of the parts that compose a cell phone antenna booster is a directional antenna. This is the component which is oriented towards the direction of the signal source, such as a cell tower, to get the strongest reception. The basic rule with directional antennas is that the bigger it is, the better the signal it receives. However, even a small model can provide a higher signal compared to the internal antenna of a cell phone.
Rebroadcast
five times the directional antenna receives the signal, an internal antenna rebroadcasts the signal within a localized area. This functions to distribute the signal equally in all directions, provided that no obstacles are present. Following the principle that cell phones work best when their antennas are aligned to the cell phone antenna booster antennas, the internal antenna helps increase the reception of the signal.
Amplify
all modern cell phone antenna boosters include a signal amplifier, which allows the signal to broadcast on a stronger scale. These devices work by repeating the signal so that the cell phone can pick it up better. Take note that a signal amplifier is useless if the antenna itself is weak because background noise, which also tends to be amplified, drowns out the cell phone signal.