Jeremy Horowitz discusses Apple’s options for improving iPhone battery life. Personally, I’m still quite happy with my iPhone 5s’s battery life, and it’s nearly a year-and-a-half old at this point. So, I don’t really feel like Apple needs to improve battery life. However, I’d love to shave a few more millimeters off of the thickness of my iPhone — Ever since I started using the iPad Air 2, my iPhone 5s has felt thick and clunky by comparison. I suppose this puts me in the camp advocating for improved battery cases, even though I’ve never used one.