Tech is getting better.
Maybe not.
it is like for example a dsi
Yes, the Nintendo DSi can play regular US DS games, as they are not region locked. However there is a type of game marked as 'DSi-enhanced', which are region locked. A UK DSi cannot play a US copy of Pokemon Conquest, for example.
No, because they are specifically designed for the DSi. For example, the game might need a camera. A DS does not have a camera! Hope this helps.
the dsi game has to have a wi-fi option (gts on Pokemon for example) and even thin it is restricted to what ever the game has on it so you cant just go to sites like this on your dsi.
If you go to 'Settings', page 4, it will give a list of countries. Note that DSi's are region locked to a specific region, to control access to certain online content including the DSi Store. That means the US doesn't appear at all on the list on a European DSi for example.
you cannot get a dsi with dsi points
yes a dsi charger fits a dsi XL and a dsi XL fits the dsi
UK: DSi - £129.99 Dsi XL - £169.99 - £189.00 US: DSi - (approx) $149.99 DSi XL - $189.99
Yes, the DSi charger is the same as the DSi XL.
No, the dsi XL has a bigger screen than the dsi.
There is no "DSi lite" console but if you mean the DSi XL, it is fully compatible with DSi games(although you'll have to buy them twice if you want a copy on a DSi and a DSi XL)