The battery life is good as you would expect, with the 4K display coming into full effect for 4K content only and operating normally at other times. I was able to keep this phone around as a secondary device for a full weekend of travel - granted, I was only unlocking it for photos and such, but it did take over five minutes of 120FPS video, sit at full-screen brightness and be used for 20 photos in total.
While five minutes of video and 20 photos isn't that impressive in the overall scheme of things, this phone was connected to wireless and didn't go on a single charge in a 50-hour period, showcasing a great long lasting battery life compared to many other models. Also, I had a play around with the pre-installed AR Effect App (as seen above), which makes the device work incredibly hard.
It's also worth mentioning that this product doesn't get too hot and steamy under pressure too when compared to many Samsung models, allowing for you to use and charge simultaneously without becoming uncomfortably hot.
Where the Issues Lie
Keyboard: While it's certainly better than Samsung's stock offering, it still has nothing on SwiftKey.
No replaceable battery: This is quite a personal thing, and I've read product developers and marketing staff of large phone brands state that a non-replaceable battery comes with a few positives in the overall design. According to them, the enhancements of a non-removable backplate means that the overall phone structure is stronger while the frame can be made smaller and thinner. They also say that the internal battery being made larger due to having a custom space made for it - not worrying about accessibility and removal. However, a spare battery is ideal for those who use their phone over many years, replacing the original with a replacement when a cell or two fails - or keeping with you in case of an emergency.
Tacky side buttons: As I mentioned before, the side buttons feel quite tacky and don't match the overall marketing and presentation of this phone - that being a thing of beauty, refinement, and class.
The shape and backing: Also mentioned multiple times in this review, the rounded rectangle design and smudge-heavy backing plate are deal breakers for me in this model, even though the internals and screen are brilliant.
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