  In this research, we propose a modified version of the 3-3-1 model,
incorporating a type I+II seesaw mechanism and Z4 discrete symmetry, as a
framework for investigating lepton flavor-violating (LFV) decays. This model
successfully yields the left-handed neutrinos mass square difference in the eV
scale, with specific values of mass square differences; and generates mixing
angles that align with experimental data. Furthermore, we develop SARAH and
SPheno algorithms tailored for our modified model, enabling us to estimate the
magnitude of LFV observables. Our calculations indicate favorable results for
various LFV branching ratios. These findings demonstrate improved agreement
with experimental measurements compared to previously reported results, which
typically fall within the range of 10^-2 to 10^-6.
