Trouble making uncropped 4x6 prints

[snowbear]

and then there's ISO sizing (metric), architectural sizing (9x12, 12x18,18x24, . . . ), ANSI sizing (8.5x11, 11x17, 17x22, . . .)

 

[Bebulamar]

How can you print 4x6 photos from the phone camera (and a few downloads and screenshots) that don't automatically crop at the photo kiosks in stores? You can bypass the cropping but then it gives you those lame white bars on the sides. I just want a 4x6 print that matches the photo from 1 end of the print to the other like we'd had for the first 1900 years or so of this little thing called photography lol!

Unless you carefully do it in the darkroom yourself I have never seen a 4x6 print uncropped even if the original film or digital file is of the correct aspect ratio. They always cropped a bit. So you really didn't see those as you claimed.