Here is a tip shared with Amazon Fire Phone owners.
Personally, I think Amazon Fire Phone is a good choice for people who consider to change their smartphone. It is the only smartphone with Dynamic Perspective, Firefly and Mayday. If you have one, you will have many functions other people do not have. It is pretty cool.
However, if you are a iTunes movie lovers, you need to read this tutorial before you buy the phone. Because your new phone will not be allowed to play your purchased or rented iTunes movies. And here is the only way you can transfer them to your Amazon Fire Phone.