Here we investigate temperature-dependent charge transport in solution-processed methylammonium lead triiodide（MAPbI3）perovskite thin films with steady-state mobility measurements.Based on the control of thickness（L）of MAPbI3 films,one attains a tunability in carrier mobility,trap density and recombination that lead to varying the device characteristics.We find that the increased hole mobility in MAPbI3 with incremental variation on L is associated with the reduction in trap concentration and Shockley-Read-Hall（SRH）recombination.By interrogating the ideality factor,we identify that the SRH charge recombination is present in the optimal solar cell.Of interest,the impact of traps on recombination becomes weakened and eventually is overwhelmed by bimolecular recombination with increasing L.Photoluminescence decay kinetics reveals that the PL related to surface and bulk recombination is both longer-lived at larger L,in line with the results using electrical characterization.The meliorated transport properties with reduced charge trapping in MAPbI3 films can correlate to the slightly increased crystallinity and homogeneity of grain size distribution in thicker films.The combinatorial study shows that charge transport alongside traps can be tuned simply by the physical parameter of L.In the meanwhile,our work points to the necessity to further reduce the trap density so as to boost the photovoltaic performance using perovskite thin films.