Charge transport and magnetic properties of films of polyaniline (PANI) doped with 10-camphorsulfonic acid (CSA) and 2-acryloamido-2-methyl-1-propanesulfonic acid (AMPSA) have been studied by conductivity, magnetic susceptibility SQUID measurements, and 3-cm and 8-mm EPR spectroscopy at doping levels y from 0.3 to 0.9 over a temperature range from 15 to 300 K. The temperature dependencies of conductivities were explained in terms of the advanced multi-phase heterogeneous granular metallic (HGM) model with percolation including disordered metallic (DM) and non-metallic (NM) phases. The anomalous conductivity change in the PANI-AMPSA_y system at T > 240 K was accounted quantitatively for a solid-phase equilibrium with the occurrence of the disordered anions (DA) phase from the metallic islands. The means for analysis of the EPR line shape in conducting media have been developed and with them conductivity and microwave dielectric constants estimated and two EPR signals, R₁ and R₂, detected in both systems. It was shown that R₁ signal belongs to pinned radicals of isolated polymer chains, whereas R₂ is the weight-averaged signal, resulting when three types of paramagnetic centers, localized and mobile spins in the NM and DM phases, interact via exchange. From the temperature and frequency dependencies of the R₂ line-width the spin diffusion parameters for the NM phase in both systems were determined. In was found that the HGM model allows good explanation of both charge transport and spin diffusion in the doped polyaniline films.