It depends. If the touch screen works, but isn't clicking where you want it to, then you need to calibrate it. You can do this on the Settings. If the touchscreen is not responding at all, then sorry, you need a new Nintendo DS.
buy a new one
The lower screen is a touch sensitive screen.
try taking off any screen protectors
buy a new one
Your DS was probably screwed. Try replacing it, or send it back to the store to fix it.
buy a new one
use a toothbrush and brush out any dirt in between the DS and the touch screen
The lower screen is a touch sensitive screen.
i have no idea, because, i don't own one
When you turn it on you'll go to the main DS screen then hit the DS symbol at the very bottom then hit the yellow icon all the way to the left to calibrate the screen you're welcome :) Go to the main DS screen and at the bottom hit the DS symbol then hit the yellow symbol on the RIGHT to calibrate
You can play games on the DS using a stylus and a touch screen
Yes,of course it is a type of DS after all
you reformat it
No its not. The only portable game system that has a touch screen is the Nintendo ds.
The Nintendo DSi, like the two previous incarnations of the DS, has two screens, one a non-touch screen and one touch screen.
try cleaning it
You go to an apple store and they will fix it for you