Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Not worth the cost

Very disappointed! The overall layout is clunky. Screen refresh and flashing is annoying. The device is not intuitive. Not sure I understand the hype surrounding this product. I purchased it for competitive analysis thinking there would be something novel. Not impressed. I read through some of the 5 star ratings and just do not get their enthusiasm considering we have these interesting devices called "smart phones".