Regarding battery life, it is imperative that you the user program the battery from the start for long life. You do this by ensuring your first ten charges of any new lithium ion battery are 100% full charges and you drain the battery each time afterward (first ten uses). If you see bad reviews from knuckleads online as a result of poor battery life, improper initial battery charging and draining is normally the cause (95-99%). This is standard operating procedure for lithium ion batteries in case you are not a technology geek or Best Buy Geek Squad employee. It took one minute flat to connect/download all my Gmail.com email on this phone after I opened the box. You can easily connect to Google Play also with a little How to research on the Internet.
I bought this Fire Phone unlocked for $189 from Amazon.com (an awesome after Christmas Sale price), so naturally I had to buy a nano sim card and install it ($3.99 online), available at AT&T store or you get one as part of the "Bring Your Own Device Phone Activation Kit" from Walmart for the StraightTalk.com wireless service. This is what I have used for 8 years now. I'm always recommending it to others because you receive Unlimited Talk, Text and Internet/Data for $45/mo. The Internet/Data is really unlimited, which is great because video anything uses massive amounts of data fast. The phone purchase included a free year of Amazon Prime (Movies, TV shows, documentaries, free shipping on Amazon etc.), free photo storage in the cloud, photo editing software, some essential apps are preloaded, free HQ ear phones, data transfer/charging cord, stunning original screen saver artwork with time and date built in and you download the user guide/instructions as a PDF file.
I especially love the interesting 3-D screen savers and maps that show off the dynamic perspective feature. I also am thrilled about the data entry by voice feature and voice commands. Also, the Specific Absorption Rate (SAR) is lower than the iPhone 6 and Samsung Galaxy 5S. That means it puts out less microwave radiation. Gosh, there's so many features and benefits on this phone I can't think of them all on the spur of the moment. Well, I've had this phone for 20 days now and have given it a thorough testing in every way possible. It passed every test with flying colors. I can now step away from the office and not miss any important emails and take great photos without carrying my bulky DSLR camera. I can also enjoy Amazon Prime membership free for one year (sweet-movies, TV series, free 2-day shipping, photo storage etc. all free) read my Kindle books easily on my phone, it is small and light enough to carry in any of my pockets. Yet big enough to read books on easily.
I can assure you that I did extensive research and shopping to compare and contrast the iPhone 6 $699, the Samsung S5, Google Nexus Phone, Nokia Lumia 1020, Fire Phone and various models of HTC and BLU phones. For overall value on a great smart phone with a HD digital camera and video the Fire Phone beat them all. Yes, I did wait for a sale at Amazon.com. However, I was extra motivated to make a smart long-term decision because the last mobile phone I had, a candy-bar style smart phone by Samsung # 455 caused me to have severe nerve pain in my legs for a couple of years thanks to excessive microwave radiation.
I like the LED flash that automatically works in lower light conditions. The big hassle of transferring your digital photos/videos is history with the Amazon Cloud Drive because all your photos are sent their instantly (think of how much this helps the CIA, NSA, FBI, DEA etc.). I did turn off Dynamic Perspective eventually to maximize my battery life, however whenever I look at street maps, 3D graphic or artwork I will switch it back on in an instant. Sure, there are minor areas of improvement left for future Fire phone releases like a better selection of apps (this will come soon enough), built-in self timer for taking photographs and a faster shutter time option on the camera for taking sports/action snapshots. See a great closeup snapshot of my Husky attached. However, this smartphone is MAR-VEL-OUS right now. It's about time somebody gave Apple and Samsung some legitimate competition. Bravo to all the folks who designed and built the Fire Phone and brought it to us at an affordable price. Thank you very much. (some photos taken with the Fire Phone's 13 MP camera follow).