Reference to an iPhone without audio jack appears in the iOS 9.3 beta code
The iOS 9.3 public beta 1.1 code shapes up to be a treasure trove of things to come with the next iPhone iterations. After discovering references to the ultrafast Li-Fi connectivity standard in the code lines, one jailbreak aficionado has now posted a snapshot that corroborates the most intriguing rumor about the eventual iPhone 7 - the disappearance of the standard audio jack.
The developer posted the picture you see below on their Twitter account, marking the code lines with the string "Headphones.have.%sinput.NO.” In other words, at least in the iOS source code, Apple is prepping for a life without the ancient 3.5mm audio jack that's been on the vast majority of phones since time immemorial.
Given the persistent rumors that Apple has slimmed the iPhone 7 further, when compared to the already catwalk iPhone 6s, a lack of audio jack is not out of the question. With handsets racing to become ever thinner, the round standard jack is certainly one of the obstacles on the way to make them even more elegant. There are already headphones with a Lightning port connector on the market, plus there is always wireless connectivity, too, so we will keep our ears up for any further tips on exactly how thin may the iPhone 7 become in the end.