Signal being transmitted and received from the BTS (base transmitting station) or cell tower is of high quality and millions have been spent to make it so for subscribers. Cellular signal which is presently still mostly being transmitted wirelessly throughout South Africa is on 900, 1800 and 2100 MHz.  LTE and 5G on the new frequencies, still require a lot of wireless networking to be done.   These frequencies fall within the high UHF and Microwave frequencies – therefore, use of high wattage to amplify it becomes dangerous and a health risk. 2400 MHz is what your microwave operates on – think on that - I rest my case. Due to these high frequencies and low wattage, penetrations of bricks, concrete, blinds on windows, reflection from steel roofing, high trees and surrounding builds obstruct the signal from penetrating where it is most needed, indoors. An indoor signal booster with an outdoor antenna mounted on a mast will greatly enhance your mobile and your wireless router’s received signal (RSSI).   Distances from the base station up to 25 kilometers with LoS (line of sight) are not a problem for good quality Amplitec signal booster. Even giving coverage to a homestead or a lodge behind a Kopple (hill) can be overcome. https://sdexperts.co.za/large-home-office/ https://sdexperts.co.za/lodge-in-difficult-terrain/ https://sdexperts.co.za/lodge-in-namibia/