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Quantum phase transition in topological insulators has drawn heightened attention in condensed matter physics and future device applications.Here we report the magnetotransport properties of single crystalline (Bi0.92In0.08)2Se3.The average mobility of ～ 1000 cm2·V-1.s-1 is obtained from the Lorentz law at the low field (＜ 3 T) up to 50 K.The quantum oscillations rise at a field of ～ 5 T,revealing a high mobility of ～ 1.4 x 104 cm2.V-1.S-1 at 2 K.The Dirac surface state is evident by the nontrivial Berry phase in the Landau-Fan diagram.The properties make the (Bi0.92In0.08)2Se3 a promising platform for the investigation of quantum phase transition in topological insulators.