No, Nokia n-gage clones don't exist. It's not like the nes that it had a very easy to clone hardware. It's not even popular enough to get fakes (like the iphones). Probably it's just a bunch of refurbished units that happened to be there. It's still worth a lot if you have a box tho.
Yes, NGage was also sold in China and surrounding areas, it’s just that the influx of the units coming from there in 2024 are refurbished units, otherwise they are identical and official in respect to what carriers and bands they were compatible with. It’s not like you can activate it anymore in 95% of the world.
Holy shit I used to play Tomb Raider and i think Burnout on an N-Gage in the store any time I got the chance!totally forgot about that. Although I can't remember if it was the same model as yours