I agree that +every+ mobile device could be improved - my original point: I see every make and model “hugging” walls, vying for public charging space, it’s not limited to iPhone users.
I think there’s a contingent users who rarely need supplemental power, and another who always need extra power. If the non-iPhone products got 18+ hours of use I could see a distinction, but they don’t. I’m fairly well traveled, own development shops, and exposed to a wide range of mobile devices/device users from the DOD in DC to teams of developers from several Big 5/10 agencies, and I see just as many Android devices (Samsung, Sony, HTC, Google) plugged in as Apple devices.
From my personal experience, we tend to not run into issues with battery life, but maybe we’re so conditioned to plan for use, it’s not an issue for us. For example: we’re headed down to Universal in a few weeks, and like previous trips (we go down 3-4 times a year), we’ll shoot a constant stream of photo and video and get all day use out of our iPhones, but we go into the park at 100%, and only use the devices while in the park (by choice) for photo/video.
I still consider the net experience with Apple devices to be superior, but that certainly doesn’t suggest that there isn’t room for improvement