Sony Xperia Z1 is Sony’s latest flagship device after the huge success of the Xperia Z. It has a 5″ screen with a resolution of 1080×1920 pixels. It is powered by a Snapdragon 800 Quad-core 2.2 GHz Krait 400 processor along with a 2GB of RAM. It has 16GB internal memory which is expandable up to 64GB. To top it off, it has an amazing 20.7MP primary camera.
Previously, we have seen how to root the Sony Xperia Z1. If you want to install custom ROMs, kernels on this device, you will have to unlock the bootloader of the Xperia Z1. Another advantage is that Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders. So if you want to unlock the bootloader of Sony Xperia Z1, follow the instructions given below.