Any size (i.e. data capacity) of the standard size (i.e. physical size, one square inch) of SD card will work.
The Nintendo DSi cannot save pictures without an SD card. SD card must also be compatible with the Nintendo DSi to be able to save photos.
From what I hear it is compatible. I am not compielty sure if it compatible. There are many r4 cards in the market currently. The r4 ds card is only for ds and ds lite. but the r4i card can run on dsi. Well, the latest version is r4 3ds card. It can run on Nintendo 3DS,DSi and DS console. If you want to get a flash card with good compatibility, I suggest you to got a r4 3ds card.
No, Pokemon Black and White are compatible with all versions of Nintendo's DS line.
Of course, the r4i sdhc card can work on Nintendo DSi V1.4.2, DSi V1.4.1, DSI V1.4, DSi XL, DSILL, DS and ds lite. DSi V1.4u is also compatible.
If your r4i gold is genuine card from gamezway.com, it can work on below Nintendo console: 3DS, DSi V1.4.3, DSi V1.4.2, DSi V1.4.1, DSiLL, DSiXL, DS and DS lite. DSi 1.4e is surely compatible.
no.....
No, the Nintendo DS charger is different than the Nintendo DSi charger.
You can buy games from the built-in DSi Shop using Nintendo Points. You need a compatible Wi-Fi Network, though.
You need a credit card or a nintendo dsi card.
No. The Nintendo DSi and the Nintendo 3DS store games on the SD card, not a sim card.
nintendo ds: no nintendo dsi: yes(but needs acompatible memory card)
Yes, since the DSi and DSi XL are the same, software-wise.