Quick meaning
The security feature that locks your phone screen after a period of inactivity, requiring a PIN, password, or biometric to unlock.
Think of it like this
Like the automatic locking mechanism on a front door after you step inside.
Where you may see this
You may hear this when buying a device, asking for repairs, or checking phone and computer settings.
Why it matters
Understanding the hardware term helps you choose the right device and explain problems more clearly when asking for help.
Say it simply
Screen Lock means: The security feature that locks your phone screen after a period of inactivity, requiring a PIN, password, or biometric to unlock.