Although Apple did not officially announce the battery capacity of the new iPhone 6s during the presentation, observant users were able to see the marking of this important part in one of the product’s commercials. As it turned out, the novelty was equipped with a less capacious battery in comparison with its predecessor, the iPhone 6. According to the video, the iPhone 6s smartphone received a 1715 mAh battery, which indicates a decrease in battery capacity compared to the iPhone 6, which has a figure of 1810 mAh . However, the operating system and processor, which, according to Apple, are much more efficient and more energy-efficient, noticeably affect battery life. The company went to reduce the size of the battery, probably for the sake of installing more modern components. This was not affected by the fact that the body of the novelty became 0.2 mm thicker.