What is optimize on Android?

Short answer. The short story is that Android is doing what it says, creating an optimized version of each app for the new version of Android you just upgraded to. This process makes each app start as fast as possible with the new Android version.

Is it good to optimize your phone?

Don’t get me wrong, most Android devices work fine out of the box. But with a few minutes of manipulation and a few helpful apps, you can optimize your phone to make it more powerful, useful, and efficient.