Most people assume that force-closing Android applications will free up memory and make their smartphone faster.
The practice is perhaps acquired from how Windows runs, where closing a program frees up memory and processor power.
However, Android is designed in such a way that it prioritizes active apps over those in the background and allocates resources accordingly.
When you don’t use an app in a while or minimize it into the background, Android puts it in ‘sleep mode.’ In this state the said app uses bare minimal processor power and memory.
Given that such apps don’t have to load up everything, this also makes them to launch much more quicker.
If your device is running out memory or it requires more processor power, Android will kill apps it deems unnecessary at the time.
Therefore, force-closing an app is counterintuitive because it will actually require more resources, including battery power, to start than it would if it was in ‘sleep mode’.
So once you are done using an app just exit and let Android handle it in the background.