Ds Protection

[Mosch]

I want to buy a DS and I now I wonder if they actually have regional protection. I know that so far no Nintendo handheld has a lockout chip or similar, but I don't want to take a chance
Also, how about GBA games? It only plays GBA games, as far as I know, but no Gameboy Mono or Colour games, right? Also, does it play all GBA games or are there known incompatibilities?

Thanks.

 

[SatanClaus]

There is no region protection on DS and GBA carts. You can play every game with every system.
The DS plays every GBA game, but no Mono or Color.