What the title says.
I only broke 2 game handhelds in my life. Both of them were GBAs. One of them was an SP, and suddenly, for some reason, the screen stopped working unless i bent it back really far. I bent it too far and it broke in half.
The other one was a normal GBA which I fell and landed on the screen. The screen broke, but I didn't know you could replace the screen, so I threw it away.