As users Zenix and DrMoishe Pippik indicate there is symmetry in the compound.

If the two phenyl groups are planar, then there is one plane of symmetry which would be the plane of the image as shown. The bond between the two phenyl groups would be a $C_2$ axis of rotation.

If the two phenyl groups are perpendicular, then there are two planes of symmetry, one with each of the phenyl groups. The two planes would intersect along the bond between the two phenyl groups, and that intersection line would again be a $C_2$ axis of rotation.