Fake Nintendo 3Ds?

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- in Nintendo
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I bought a Nintendo 3Ds a long time ago. Unfortunately, it is completely in Japanese, so you can't change it, so I wanted to ask how I can tell whether it is original or fake. It can also be an original Japanese version. Would be really nice if someone answers what someone who knows

Kind regards

Fake Nintendo 3Ds
Di

Can't you change the language in the settings?