iPhone X yellow screen

Hi Apple,

Your iPhone screen is Yellow (Without True Tone, nightshift is off, no low power power , no color accafomation is on) my question is simple , Why we got a defect device? Because if re-calibrate that in the Display acadomantion it looks fine but still please check if there is a bug and recalibrate all the devices next software update at the picture two devices(left one is defect),

Please let us know if it's software issue