Comment by Dylan16807

I don't see how that could be true. The thinnest ever iPhone was the 6, and it had a headphone jack. The phones since then have been 3-20% thicker.

Some searching suggests that 5mm is about the point where it won't fit, and iPhones are comfortably 7+. One of these phones is 5.6mm thick with a headphone jack and has near-zero bezels.