The study investigates the electron-phonon coupling in hybrid lead halide perovskites, focusing on the temperature dependence of emission line broadening in four commonly studied materials: formamidinium and methylammonium perovskites. The research reveals that longitudinal optical phonon scattering via the Fröhlich interaction is the primary source of electron-phonon coupling near room temperature, with acoustic phonon scattering being negligible. The energies of the interacting longitudinal optical phonon modes are determined to be 11.5 and 15.3 meV for lead iodide and bromide perovskites, respectively, with Fröhlich coupling constants of approximately 40 and 60 meV. These findings are well-correlated with first-principles calculations based on many-body perturbation theory, supporting the use of an electronic band-structure picture to describe charge carriers in hybrid perovskites. The study also examines how perovskite composition affects Fröhlich interactions, finding that bromide perovskites exhibit higher Fröhlich coupling due to their smaller high-frequency dielectric function values. Overall, the results highlight the importance of electron-phonon coupling in determining the intrinsic charge-carrier mobilities and cooling dynamics in hybrid lead halide perovskites, which are crucial for their optoelectronic applications.The study investigates the electron-phonon coupling in hybrid lead halide perovskites, focusing on the temperature dependence of emission line broadening in four commonly studied materials: formamidinium and methylammonium perovskites. The research reveals that longitudinal optical phonon scattering via the Fröhlich interaction is the primary source of electron-phonon coupling near room temperature, with acoustic phonon scattering being negligible. The energies of the interacting longitudinal optical phonon modes are determined to be 11.5 and 15.3 meV for lead iodide and bromide perovskites, respectively, with Fröhlich coupling constants of approximately 40 and 60 meV. These findings are well-correlated with first-principles calculations based on many-body perturbation theory, supporting the use of an electronic band-structure picture to describe charge carriers in hybrid perovskites. The study also examines how perovskite composition affects Fröhlich interactions, finding that bromide perovskites exhibit higher Fröhlich coupling due to their smaller high-frequency dielectric function values. Overall, the results highlight the importance of electron-phonon coupling in determining the intrinsic charge-carrier mobilities and cooling dynamics in hybrid lead halide perovskites, which are crucial for their optoelectronic applications.