Whether you have an iPhone or an Android smartphone, there is a widespread legend that closing all apps will save battery life and improve performance. “FAKE !” would exclaim a famous Youtubeur.
And for the most doubtful, explanations come from engineers and developers originally from iOS (for the iPhone) and Android (for all other smartphones). Worse, this habit would even tend to alter the proper functioning of your smartphone.
Your smartphone doesn’t need you
Whether it’s Apple or Google engineers, the message is the same: your smartphone does not need your intervention to optimize the operation of applications. In 2016, Craig Federighi, head of iOS at Apple, explained that manually closing apps doesn’t save battery power.
Same story at Google. Hiroshi Lockheimer, responsible for Android at the same time, explained to the American media Wired that this action is not useful. He even added that this could “slightly deteriorate” the operation of the smartphone. He explained:
The system is optimized to handle ongoing tasks, messing with it only causes more errors.
To a journalist from Quartz who asked him if it was better to voluntarily leave all the applications open, he replied: “better to let the system do its job”.
— Hiroshi Lockheimer (@lockheimer) March 14, 2016
Manually closing your apps can damage your smartphone
The developers are unanimous: operating systems are designed to self-regulate. To intervene is to put a grain of sand in the gears, at the risk of damaging the smartphone.
Indeed, operating systems are able to target the applications you use the least and put them “to sleep”. They are always open in the background but require very little battery and processor. By closing and then opening, you will experience these two components more.
This is all the more true as the latest versions of iOS and Android learn from your habits. Thus, the OS even identifies how often you use specific applications, at what time of day, for how long, etc. Thanks to the power of the algorithms, the optimization is much more precise than if you intervene manually.
There is finally only one case in which it is recommended to close an application manually: when it crashes. This happens sometimes, so a complete shutdown is the only solution for it to restart on a good footing, having corrected the problem. But apart from these specific cases, you can let your smartphone do its thing. He does very well on his own.