Evolution of the median SFR−stellar mass relation in the FLAMINGO simulation from z = 6 to z = 0.5 for SMGs grouped into four flux density ranges shown with yellow (1 ≤ S₈₅₀/mJy < 2), orange (2 ≤ S₈₅₀/mJy < 3), green (3 ≤ S₈₅₀/mJy < 5), and pink (S₈₅₀ ≥ 5 mJy) color curves. Their respective shaded regions represent 16–84th percentiles. The background gray color maps show the distribution of all FLAMINGO galaxies. The red color curves display the fit to the observed SFMS of galaxies given in Popesso et al. (2023). Here, we have shown SFRs and stellar masses within spherical apertures of 30 pkpc, and flux densities using H13 model. At all redshifts, SMGs tend to fall on or above the SFMS of galaxies. Most of the z ≤ 1 or z > 6 SMGs are starburst galaxies.