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
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
Counterpoint: Put it inside the phone, where it belongs.
Does it actually belong in the phone? Putting the adc chip outside the phone gives the opportunity to upgrade your sound rather than depend on what the manufacturer bundled or even screwed up. (Nexus phones were notorious for bad headphone output.)
Fun fact - mobile phones didn’t have 3.5mm jacks until very recent times.