This experiment aimed to evaluation of the effect of radiation emitted from A third generation Huawei mobile phones (900 MHz radiofrequency) on the behavioral; performance and cortisol changes of quail. A total of 135 one day old age Japanese quail chicks which divided in to three group as control group without any phone exposure (n=45) and second group were exposed to mobile phone radiation (n= 90) which at all age (during and post hatching) or post hatching only, The obtained result, illustrated that, the phone radiation leading to a significant increase in resting; standing and cortisol level with a significant decrease in feeding; preening , exploratory behavior, feed intake, body weight and body weight gain all of this reflect an a stress factor depending on the time for exposure. in conclusion, exposure to mobile pone radiation leading to a negative impact on behavior,performance and cortisol level in quails which depending on length of time of exposure