Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective

At a cursory glance, the DS seems fine. I used it to play Pokemon FireRed for an hour or so on the top screen and it seemed fine. However, when I went to go and change its internal clock, I noticed that the bottom screen very quickly starts having rendering problems. After just a few moments the bottom screen was completely white, and while it responded to touch, nothing was visible. Completely unusable for any game that makes use of the bottom screen, which just makes it a glorified Game Boy Advance.