When Apple announced that the iPhone 7 wouldn't have a standard headphone jack, I wrote an article saying that I would never buy this phone until a battery case brought the jack back. Since that post I have been contacted by four different manufacturers currently working on this very concept. Yesterday we actually received a working unit in the mail.
The iStand 7 is the name of the case and it is exactly what I've been hoping for. This case adds additional battery life to the phone for all day use and also adds a headphone jack and lightning jack to the bottom of the phone. Our review unit didn't work perfectly but we have been told by the manufacturer that our issues will be fixed in the final release.