BACKGROUND — One of the diverse applications of RF technology is in voice/mobile telephony signal transmission. This age old introduction has revolutionised the concept of communication in terms of providing easy & instant connectivity to 95% of human population, forming a vital backbone to the telecommunications industry. The RF technology, comes with some paucity in terms of regional coverage and power consumption. It is witnessed that due to signal deterioration, the mobile phone connectivity deep inside buildings is often difficult or poor. This project intends to answer the problems faced by the RF technology, by exercising visible light systems for mobile signal transmission in an indoor environment.