Comparing the 3.5 mm audio jack to the floppy drive is ridiculous. The jack has become far, far, more ubiquitous than the floppy drive. Additionally, the things that use the jack are often of higher quality and not disposible like a floppy disk was. And this ignores the fact that the floppy disk/drive was technologically usurped by other removable storage formats.
The 3.5 mm jack still delivers the absolute best sound quality compared to the other options available on a smart phone.
Most, if not all, of the other solutions will be a step backward.
The 3.5 mm jack still delivers the absolute best sound quality compared to the other options available on a smart phone.
Most, if not all, of the other solutions will be a step backward.