Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Global Kindle is not "improved" for some

I tried the Sony EReader & did not like it. I got the Nook, which looked great, however it would not even connect to register in the small rural community where I live (Olton, TX, 50 NW of Lubbock, TX)The cell phone service it used won't work here. At least 3 people in my town have Kindles and love them. So I got the Kindle. Since they purchased their Kindles, Amazon has changed to "Global" Kindle that uses AT&T cell phone service. It worked part of the time, and minimally. The USA Kindle that a local resident owns has displayed 3G service here (Sprint)-not my "improved" device. I asked if I could change for the USA version, no I cannot. A tech from Amazon thought he could switch cell providers for my device, but it is a hardware issue. It goes back today. Lesson: KNOW what cell service works where you live and verify Kindle uses that service. I believe only AT&T works with the Global Kindle.