The most common way to unlock a vape is by repeatedly pressing the power button until you see a light flashing (typically clicking 5 times in a row is the standard). This will usually indicate the operation of the lick feature and will then be unlocked.
Full Answer
How to unlock a vape pen?
To unlock the vape pen rapidly (we mean fast!) press the button 6 or more times until the button flashes. Disregard any set number of presses you may read in the instructions. If you do not have the timing or the rhythm down or skip a beat, this will alter the number of times you need to press the button. I just press the button until it flashes.
How to lock a pen?
To lock the pen, simply follow the same instructions as unlocking the pen. Once the button flashes, the pen should be in locked position and the button will not light when pressed down. So please don't panic when you first get your pen and the button doesn't light when pressed.