Technology changes all the time. At the time this phone was released it was the best phone on the market. Now there are a couple phones that are comparable. Still, it's an incredible device and I am very happy that I left Sprint in favor of TMobile.
Truthfully, the screen is so big that I don't use the Kindle any more. I find watching movies and reading books on this phone are just fine for my use. I do keep an extra battery charged at all times. . .