MEID is not displayed on settings

Hi,

I have an iPhone 7. Recently I noticed, while comparing to other same model iPhones, that the MEID is not displayed "Settings > General > About" screen, while it is on the other 2 iPhone 7s I've compared it to. Is there a reason for this? The only difference I between my phone and the other 2 is that mine is GSM. Would this make a difference?

Thanks in advance.