Cold boot time on a Quest is roughly half a minute, though most of the time, you'll just wake it up from standby. For testing, I just put my Quest 3 on my head,

Cold boot time on a Quest is roughly half a minute, though most of the time, you'll just wake it up from standby. For testing, I just put my Quest 3 on my head, and without pressing the power button, I counted five mississippis (seconds) before I was fully in their heavily customized version of Android with hand tracking recognizing my digits.