  With electron and hole pockets touching at the Weyl node, type-II Weyl
semimetal is a newly proposed topological state distinct from its type-I
cousin. We numerically study the localization effect for tilted type-I as well
as type-II Weyl semimetals and give the global phase diagram. For dis- ordered
type-I Weyl semimetal, an intermediate three-dimensional quantum anomalous Hall
phase is confirmed between Weyl semimetal phase and diffusive metal phase.
However, this intermediate phase is absent for disordered type-II Weyl
semimetal. Besides, near the Weyl nodes, comparing to its type-I cousin,
type-II Weyl semimetal possesses even larger ratio between the transport
lifetime along the direction of tilt and the quantum lifetime. Near the phase
boundary between the type-I and the type-II Weyl semimetals, infinitesimal
disorder will induce an insulating phase so that in this region, the concept of
Weyl semimetal is meaningless for real materials.
