As a result it isn’t always the fastest or most efficient.There’s a huge number of third party launchers in the Play Store, and many are optimized for speed.Replacing it with a bloat-free ROM like Cyanogen Mod can give you an instant speed boost.The kernel manages every interaction between your phone’s software and hardware. Making a few changes and keeping your phone free from clutter can give you a quick performance boost. The default apps and settings on Android aren’t always the best if speed is your priority.You can change how quickly the processor ramps up to top speed, or how busy it needs to be before it activates extra cores.Some even offer per-app settings so you can have the device running on maximum power when playing a particular game and dropping back to normal as soon as you exit it.
Custom kernels enable you to tweak how the hardware functions.
A custom ROM contains a complete build of the Android operating system, and it replaces all the software that came pre-installed on your phone.