I've been looking at battery cases for my iPhone 7+, and I've noticed two major flaws: 1. Most of the battery cases use a micro USB port to charge up the case. Given that now the iPhone 7 lacks the 3.5mm jack, it's now impossible to use wired headphones to listen to music when the phone is inside the case. 2. For the battery cases that do use the lightning port instead of a micro USB port, they all have a warning that only bluetooth headphones will work; audio will not transfer between the case's lightning port to the phone, making the use of the lighting headphones non-functional. I know it's earlier and I'm sure these issues will be addressed, but it's frustrating at the limitations that one area of not having the 3.5mm poses.