Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great for my teenager-not for an adult who uses serv. a lot

This service is perfect for my teenager. She does not need a lot of minutes and it is a way to break her into the wireless world. If she has too many minutes then she will be on the phone constantly. Her last card of $... lasted her about one month and if I needed to contact her at school, at the basketball game I can. Not great for long term due to expiring minutes.