The lithium polymer battery in the iPhone is good, but Apple knows it has to get a whole lot better. They, and many other companies are spending lots of money in R&D to find a solution. If you look at the problem: They are limited in size. People like the form size of the IPhone. They might increase the size a little to squeeze in a bigger battery but not meaningfully. They have a sophisticated OS that tries to be as efficient as possible in managing power requirements. They might be able to obtain more efficiency out of it, but again, not to a great extent. Apple can't shrink the electrical components very much in order to put a bigger battery in the space. And the problem will continue to grow. If the new IPhone has an advanced processor people will want to use its capabilities to do more power intensive applications such as gaming and videos. Customers also don't want to turn off certain features to get more battery life. You buy a phone to get these features. Battery technology has lagged behind and there doesn't seem to be any quick solution. Even if an exotic battery technology emerges it will take a few years to test and manufacture in quantity. So the next IPhone will be really good, but will still face the power problem. It looks like there will be a market for the next few years for supplemental power manufacturers like Mophie, etc. It might pay Apple to get in on this area. Maybe they can change the design to allow a quick battery replacement like some Android phones and digital cameras.