Taking the battery of a DS Lite out for about a minute resets the Date/Time and Player info, but the touchscreen calibration shouldn't change
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The Nintendo DS does not have GPS capabilities, nor does it have tools for finding a lost DS.
It's basically a disease called Amnesia when you can't remember anything from your past.
Dont format i did and i lost all my data and all my downloaded games
No, it should not delete the game file. Save files being lost for no reason is usually something that happens to counterfeit cartridges due to the battery-based memory.
look for it get a gametag it holds all the games together 24/7 even when you are playing it