Honestly, I have no idea what the differences between those models are. I presume there are some processor differences and such, I think the X models don't hav

Honestly, I have no idea what the differences between those models are. I presume there are some processor differences and such, I think the X models don't have the home button, I think all the X models have the notch as it's where the camera/ir module for the face unlock is located.