  Non-Abelian discrete symmetries provide an interesting opportunity to address
the flavor puzzle in the lepton sector. However, the number of currently viable
models based on such symmetries is rather large. High-precision measurements of
the leptonic mixing parameters by future neutrino experiments, including
ESSnuSB, T2HK, DUNE, and JUNO, will be crucial to test such models. We show
that the complementarity among these experiments offers a powerful tool for
narrowing down this broad class of lepton flavor models.
