Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for blackberries

I purchased this item to use in a Blackberry Pearl. The Pearl would never read the media card. When contacted, ATT tech service said they were having problems with this brand, that we needed to try Sandisk, and sure enough that brand worked. I have since bought a Blackberry Curve, and it won't read this card either. I probably got a bad card, but from now on won't purchase Kingston.