The objective of this study was to clarify characteristic of walking using a smartphone from the view point of kinematic analysis. When using a smartphone, gait speed was slower, cadence was lower and stride was shorter than each parameter of a normal gait. The maximum height of toes during a gait while reading using a smartphone was significantly lower than that of a normal gait. These results suggested that a gait while reading using a smartphone is not an effective method of locomotion.