We've talked extensively about the missing headphone jack on the upcoming iPhone. While some say that the move will ruin user experience -- something that has already started to seem that way in the real world -- a few argue that someone needs to push the needle to move the technology forward. Now Apple co-founder Steve Wozniak has something to say about the missing legacy audio jack as well. He is asking Apple to fix the Bluetooth first if the company intends to give users to move to wireless headphones. From a Financial Review report: Apple co-founder Steve Wozniak has warned Apple is going to frustrate a lot of customers if it removes the headphone jack from the upcoming iPhone 7. [...] Customers wanting to use their existing, wired earbuds and headphones might have to buy an adaptor that attaches to the iPhone's Lightning port, or to whatever port does remain on the phone. "If it's missing the 3.5mm earphone jack, that's going to tick off a lot of people," Mr Wozniak told The Australian Financial Review. "I would not use Bluetooth ... I don't like wireless. I have cars where you can plug in the music, or go through Bluetooth, and Bluetooth just sounds so flat for the same music." Mr Wozniak said he would probably use the adaptor to connect his existing earphones to his next iPhone, and said that, like many other users he is attached to the accessories that he uses alongside the phone. "Mine have custom ear implants, they fit in so comfortably, I can sleep on them and everything. And they only come out with one kind of jack, so ''ll have to go through the adaptor," he said. "If there's a Bluetooth 2 that has higher bandwidth and better quality, that sounds like real music, I would use it. But we'll see. Apple is good at moving towards the future, and I like to follow that."