User generated and processed Deoxyribose Nucleic Acid (DNA) or fingerprint signal is used for authentication of a mobile device. A touch screen generated processed control signal is used for control of mobile device operated in a cellular system and a Wi-Fi network. The mobile device receives, demodulates and processes a location finder signal and provides processed location finder signal to an interface unit of mobile device. From a cellular base station the mobile device receives, demodulates and processes a modulated spread spectrum signal into a received, demodulated and processed baseband spread spectrum signal and processes, modulates and transmits in cascade the processed spread spectrum signal in a Wi-Fi system. The mobile device operates in a repeater mode. In one of the embodiments the spread spectrum signal uses a Code Division Multiple Access (CDMA) modulated signal and the Wi-Fi system uses OFDM modulated signal. The mobile device comprises step of processing a video signal into baseband in-phase and a quadrature-phase cross-correlated spread spectrum or Time Division Multiple Access (TDMA) signal. The video TDMA signal is modulated and transmitted as a Gaussian Minimum Shift Keying (GMSK) modulated signal in said cellular system and wherein said video signal comprises a three dimensional (3D) image.