You mean you cannot understand why the iPhone is saving 99.99% of all users the extra work of having to disable that low power mode once the phone is fully charged again? The number of people that would want to run their phone permanently in low power mode must be minuscule compared to those that only switch it on when they see they are getting low on battery too early (or anticipate that they might run low on a particular day).I cannot understand why Apple programmers would devise a mechanism to "make our lives more difficult" by switching this off automatically after charging.