When your boot loader is unlocked, your phone displays a screen that indicates that the boot loader is indeed unlocked and how software integrity cannot be verified. But if you are the one who first unlocked the boot loader, this message will significantly slow down the boot process.
You will be given the option to press the on / off button to pause the boot process. To resume starting up, you can press the on / off button again. Standard things, right?
What you may not have noticed is that pausing and immediately undoing the boot process skips the ten seconds that the system normally spends on the warning screen. See it in action:
So just double-click the on / off button to pause and interrupt the startup process. You go through the first start-up procedure and you are at least ten seconds faster on your lock screen!
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