Usually, An Android bootloader is locked beacuse the manufacturers and carriers want you to stick to their Android OS version specifically designed for the device.
Every Android phone has a bootloader that instructs the operating system kernel to boot normally. In literal terms, bootloader is code that is executed before any Operating System starts to run.
You can greatly improve the performance of Android, such as backup system data, flash a custom ROM, customize the phone. All these tweaks enable you to tap into the deep potential of Android device.
An Android user often can't stop from tweaking, changing, customizing, optimizing the internal system and OS, and rooting the Android devices. An user usually owns one or more Android.
