While I don't expect anyone to care much about my phone's battery, this does draw into focus my one criticism with Apple over the past few iPhone generations...the obsession with "thin" at the expense of the battery life. Despite the fact that the phone is running vastly and more complex tasks, the Apple team has managed to make the phone thinner and keep the battery life (more or less) the same. That's pretty cool...but imagine if they focused on the battery life instead. The design team has removed the old 30-pin connector in the previous versions, and are currently planning on removing the headphone jack in the next version, all in the pursuit of making the phone thinner...yet completely ignoring the battery despite years of advancements. The thin phones are great...but I feel like many users think "thanks but...." when they learn the life of their phone throughout the day hasn't made any progress since 2010.
I can't fault Apple too much for this (they're bound to disappoint someone no matter what they do), but the notion of needing to listen to what people actually want is key. Just as a teacher might find an assignment extremely engaging and meaningful while the students groan, so too might a designer but so set on "showing off" that they forget about the most important aspects for the customers. In the meantime...my phone still hasn't died. Which only adds to the confusion.