If your 3DS is lost or stolen, Nintendo Support advises filing a report with your local law enforcement. You can also try to contact Nintendo. They cannot track a console's location on their own, but they can assist law enforcement if a police report is filed.
Nintendo placed serial numbers in distinct locations depending on the specific model in the 3DS family. 1. External Stickers (The Fastest Method)
Whether you are looking to buy a used handheld, verify the authenticity of a collector's item, or track down system information, understanding the process is crucial for any owner or enthusiast. Nintendo 3ds Serial Number Lookup
If you run a lookup on an exterior serial sticker that reads (North America), but the internal system menu is entirely in Japanese or has a mismatched motherboard serial number, the console has been shell-swapped. 3. Stolen Device Verification
Remove the bottom back cover (where the stylus and game card are). The serial number is on a white label inside the battery compartment, below the battery (you may need to remove the battery to read the full number). If your 3DS is lost or stolen, Nintendo
The second letter is a region identifier (e.g., W for North America). Here are examples for different models in the Americas:
My serial number sticker is completely gone. Can I find it in the standard settings? If you run a lookup on an exterior
Essential for police reports if the device is lost or stolen.
When buying a used console on secondary markets like eBay or Mercari, always compare the physical barcode sticker with the digital serial number in the System Settings.
There are several reasons to identify your 3DS serial number: A. Checking for Custom Firmware (CFW) / "Safe" Models
While less useful for the average user, the digits in the serial number may encode the device's manufacturing month and year on a technical level, though this is not an official Nintendo tool. The 3DS was first released in Japan in February 2011, and the digits can help date it.