For me it’s the notification light you used to find on older phones, was particularly good to know if your phone was charged without picking it up
Privacy
Graphic design with depth or shading.
5.25 inch drive bays on computer cases.
Giving me annoying audible notifications that my battery is low. We moved to batteries that degrade when lower than ~40% and got rid of the notifications that let us know your battery is dead…
Being able to use my phone as a remote control for TV’s that was so awesome. Could mess with TV’s at bars and never had to look for the remote lol