Almost every Android manufacturer have their own custom user interface running on the Android devices that they manufacture. Even though custom UI is not really necessary for Android, it allows manufacturers to push their brand-specific features in order to make their Android devices different from competing Android devices in the market.
We all know that the custom skins developed by Android OEM’s starts to affect the performance of the device at some point and as the device starts to get old, the UI starts to lag as well. We also know that the pure stock Android experience, meaning the default Android user interface without any custom UI on top, is the best Android experience and the one that does not affect the performance of the device.
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