One more thing, the DS Lite can play
GameBoy cartridges, the DSi (XL) can not.
Here is a list of all the differences between the DSi and DS Lite:
DIFFERENCES
Finish
* DSi Has a less-glossy finish which should mean less fingerprints left behind.
* DS Lite Has a more glossy finish
Screen Size
* DSi 3.25 inches
* DS Lite: 3 inches
DSi (left) vs DS Lite (right) Screen Comparison
System Size
* DSi Width 137mm, Length 74.9mm, Thickness 18.9mm (touch pen is approx. 92mm in length)
* DS Lite Width 133mm, Length 73.9mm, Thickness 21.5mm (touch pen is approx. 87.5mm in length)
System Weight
* DSi Approx. 214g (with touch pen)
* DS Lite Approx. 218g (with touch pen, Game Boy Advance cover)
Power Button
* DSi Has the power button located on the face of the system, much like on the original DS. Although its located on the bottom left instead of the upper right.
* DS Lite For the DS Lite, Nintendo moved to the power button to the side of the unit and turned it into a slider instead of a button.
Battery Life (how long the system will last before it shuts off on you)
* DSi The lowest brightness (9-14 hrs), low brightness (8-12 hours), medium brightness (6-9 hours), high brightness (4-6 hours), highest brightness(3-4 hours)
* DS Lite The lowest brightness (15-19 hrs), low brightness (10-15 hours), high brightness (7-11 hours), highest brightness(5-8 hours)
Charging Time (how long it takes to charge once the system has shut off on you)
* DSi Approximately 2 hours and 30 minutes
* DS Lite Approximately 3 hours
Power Supply
* Both systems will use a different AC Adapter, so you will not be able to charge your DSi with your DS Lite adapter.
Software
* DSi Plays all DS games and games made specifically for the DSi. Does not play Game Boy Advance games.
* DS Lite Plays all DS games and Game Boy Advance games. Cannot play DSi-specific games.
Input-Output Ports
* DSi Contains a: DS card slot, SD memory card slot, AC adaptor connection, stereo headphone/mic jack
* DS Lite Contains a: DS card slot, Game Boy Advance cartridge slot, AC adaptor connection, stereo headphone/mic jack
SIMILARITIES
Screen Display
* DSi 260,000 possible colors can be displayed
* DS Lite 260,000 possible colors can be displayed
Button Layout
The layout of all the face buttons and shoulder buttons remains the same with both the DSi and DS Lite. The Start and Select buttons are also in the same place. Different is the placement of the power button which is now located on the bottom left of the DSi as opposed to a slider on the side as with the DS Lite. The D-Pad has also been changed.
ADDITIONS
Cameras
The DSi features two cameras. One of them is a 0.3 Megapixel and is located on the inside hinge of the system. This camera is presumably to take pictures or video of your face as you play games. The second camera is located on the backside of the system (the outside of the shell) and is reportedly a 3MP camera for taking normal pictures/video.
Online Store
The DSi will finally feature WiiWare-like downloadable games of its own, dubbed (what else?) DSiWare. These are sold at the DSi Shop and Downloadable Content (DLC) can be bought using Nintendo Points, which range in price from freely available to 200 points ($2.00), 500 points ($5.00) and Premium or 800 points ($8.00). Original titles will be on offer for download. No word yet though on whether or not we will see Virtual Console-like retro Game Boy games for sale via the DSi Shop.
Built-In Music Player
Music can be played off of SD Cards via a music player built-in to the system as long as the audio files are in AAC format (which was designed to be the successor to mp3. No word yet on mp3 support).
Built in Internet Browser
The DSi has a built-in Opera browser that will allow for web-surfing with your DSi via Wi-Fi. Its unknown though how much compatibility the browser will allow. Lets hope its not as limited as the Wii browser, which is only good for watching
youtube videos if you ask me.
Internal Memory Upgrade
The system will include an upgrade in internal memory, presumably for all the downloading you will be doing via the DSi Shop.
Improved Internet Access Security
The DS Lite only accepts WEP security as a router setting, where the DSi accepts both WEP and WPA security for routers.
You can't go wrong with either one.
I hope this helps, One of my kids has a Lite and the other a (gamer) has a DSi XL.