Its a quixotic demand we make of our smartphones - we want the power of a super computer with the battery life of a Amazon Kindle in our pockets. Nothing promotes more debate and fills our comments section faster than the subject of battery life. No matter how much we wax lyrical about the latest hardware included in our devices the battery technology has hardly changed. Taking the last 6 years of iPhone models, using data from the results of our battery life tests, you can see that while battery life is being eeked out, it's not the dramatic exponential growth that we would see if charted...
Source: https://www.gsmarena.com/battery_life_feature-news-28707.php
