Gameboy Advance Easter Eggs

If you turn the gameboy ON with a wireless adapter then press Select + start wait 3 sec. The Nintendo logo is now yellow. Select English and you can see all players around you,and the game what they are playing.

While your Gameboy Advance is starting up, hold down Start + Select. You will hear a little bit of a sound and the Gameboy Advance will freeze until you press either up, down, left, right, A or B.