I have a question about lens distortion

[nihilist l-mtn]

When I take photos in the mirror with x3 zoom for example, my mouth to nose is 1.36 and my bigonial width is 83%, and my chin to philtrum is 2.4, but in photos quite far away, let's say about 3 meters for example my bigonial is 86.7%, mouth to nose 1.45, chin to philtrum 2.5, etc. Basically, almost all the ratios are ideal, but I don't know if they look that way or not
Which version is the most accurate?

 

[splxsh]

clav said something like 50 mm or something like that is most accurate with back camera

 

[SermoLucine]

clav said something like 50 mm or something like that is most accurate with back camera

just do 2x on apple phone