Turn your PS Vita over.

But why is the serial number so important? For the PS Vita, the serial number (often called the "S/N" or "Unit Number") is the key to unlocking warranty status (though rare now), motherboard compatibility, region locking for 3G models, and identifying whether you own the original OLED model (PCH-1000) or the slim LCD model (PCH-2000).

: The serial number is often printed on a label on the side or bottom of the original packaging.

. Because the PS Vita does not display its serial number within the system settings menu, users must rely on physical labels or external software to find it. Standard Physical Locations

On some Vitas, the label may be worn off. If so, check the box or system software (next section).