I’ve complained in the past about the iPhone’s battery life though those issues have been somewhat resolved. But there’s another issue that I think is worth considering for an upgrade. I was playing around with my iPhone 3Gs Settings > General > Usage > Battery Percentage. With a simple switch of the button you can see what percentage of battery life is left. It’s an interesting info note, but it doesn’t really help me in terms of guessing how much time that actually means. My question is that if a percentage can be displayed why not take it a step further and show how much time is left at the current usage state. If I’m watching YouTube video, let me know that I only have forty minutes of continuous play. If I’m listening to music, maybe the usage time is two hours. Obviously I’m not an engineer so I don’t really know what it would take to do this, but my guess is that if a percentage can be calculated the effort to display time shouldn’t take that much more thought.