Cobimaximal Neutrino Mixing from $S_3\times Z_2$

It has recently been shown that the phenomenologically successful pattern of cobimaximal neutrino mixing (${\theta }_{13}\mathrm{\ne }0$, ${\theta }_{23}=\pi \mathrm{/}4$, and ${\delta }_{CP}=\pm \pi \mathrm{/}2$) may be achieved in the context of the non-Abelian discrete symmetry $A_4$. In this paper, the same goal is achieved with $S_3 \times Z_2$\mathrm{.}Theresiduallepton$Z_3$trialityinthecaseof$A_4$ is replaced here by $Z_2\times Z_2$. The associated phenomenology of the scalar sector is discussed.