STAMBP and melanoma: To investigate the effect of 5G EMR on melanogenesis, murine melanoma cells, B16F10, were exposed to 5G (28 GHz) EMR at the power intensity of 10 W/m2 for 4 h per day simulating the normal smartphone use condition either alone or after α-melanocyte stimulating hormone (α-MSH, 0.2 μM) treatment.