Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A word of Warning

I recently purchased a phone which called for a MicroSD chip. I purchased the bargain brand thinking that one would be as good as another. Come to find out this perticular brand tends to be between 1-2 mm thin to register in an array of devices. If your instruction manual reccomends a certain brand I discovered the hard way you probably want to follow their advice. I paid a little more and traded brands and every thing worked fine. I easily found tech support discussion boards and blogs questioning this brand's capabilities.