The battery is one of the most important segments of smartphones however, at the moment they do not have much capacity, Apple is not very concerned about it. Jonathan Ive recently said that better battery in the iPhone would make the device more difficult and less appealing.
Favoring style over performance and appearance, Ive says iPhone is popular because it is thin and light, but it reflects the battery.
While the battery of the iPhone 6 lasts about a day, the iPhone 6 Plus is a bit more powerful and has more capacity. There is no question that many of the users who buy the iPhone, are doing it because of its design.
However, the media write that this may be attempt to divert attention from the rumors that Apple is working on a new type of battery that would be built in in the following phone models.