  We report the magneto-conductivity analysis of Bi2Se3 single crystal at
different temperatures in a magnetic field range of 14Tesla. The single
crystals are grown by the self-flux method and characterized through X-ray
diffraction, Scanning Electron Microscopy, and Raman Spectroscopy. The single
crystals show magnetoresistance (MR) of around 380 percent at a magnetic field
of 14T and a temperature of 5K. The Hikami Larkin Nagaoka (HLN) equation has
been used to fit the magneto-conductivity (MC) data. However, the HLN fitted
curve deviates at higher magnetic fields above 1 Tesla, suggesting that the
role of surface driven conductivity suppresses with an increasing magnetic
field. This article proposes a speculative model comprising of surface-driven
HLN and added quantum diffusive and bulk carriers driven classical terms. The
model successfully explains the MC of the Bi2Se3 single crystal at various
temperatures (5 to 200K) and applied magnetic fields (up to 14Tesla).
