The Apple iPhone XR Review: A Different Display Leads To Brilliant Battery Life
by Andrei Frumusanu on February 5, 2019 9:45 AM EST- Posted in
- Mobile
- Apple
- Smartphones
- iPhone XR
Battery Life - Excellent
For all their strengths, battery life is the one aspect where things didn’t quite pan out for the iPhone XS and XS Max. Even though Apple promised that the phones would see longer battery lifetimes in day-to-day usage, in our tests we weren’t able to replicate this. The main reason for both models not being able to match the battery life of the iPhone 8 and 8 Plus is because of their significantly higher base power consumption. I’ve attributed this to the OLED display – here either the OLED panel itself or the DDIC driving the panel see a big degradation in base power consumption, amounting to an extra 150mW. This is a figure that is unavoidable and a power drain that will be present any time the screen is on – no matter the actual display brightness.
The iPhone XR avoids this issue as it uses a more conventional LCD screen:
As expected, because the XR doesn’t suffer from the same high base power consumption, this significantly helps the actual battery life results for the phone. Here we see the iPhone XR reach the highest battery runtimes of any past iPhone – almost beating some of the record holders – and is only outmatched by the more recent Mate 20 with its 33% larger battery.
The results here are a lot more in line with the iPhone 8 Plus, and better represent the overall power efficiency improvements of the A12 SoC. Compared to the iPhone XS and XS Max, the XR lasts 37% and 25% longer respectively in our test.
Overall, if battery life is something you value the most, then the iPhone XR will absolutely not disappoint.
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GreenReaper - Tuesday, February 5, 2019 - link
I don't think that's the case. LCD is more efficient than OLED unless you're looking at a largely-black screen. There have been reviews looking specifically at power usage and they show a significant increase for OLED screens.FreckledTrout - Wednesday, February 6, 2019 - link
Its both the resolution and the use of LCD since LCD has lower standby draw.beggerking@yahoo.com - Wednesday, February 6, 2019 - link
don't think thats true.... OLED only light up pixels that needs to be lite up.. while LCD requires the whole backlight to be lite up... unless you really dim the LCD, OLED typically is more efficient.beggerking@yahoo.com - Wednesday, February 6, 2019 - link
Proof OLED is more effecient than LCD ... from macworldhttps://www.macworld.com/article/3223143/displays/...
cha0z_ - Monday, February 11, 2019 - link
Wrong, even the current gen LCDs are draining more power than a OLED current gen screen. The only exclusion would be a maxed out brightness, but most people don't use the phone in max brightness most of the time. Then again, I don't know what the power consumption of the XS OLED is (can't recall the Andrei tests, you can check them out in the review).The lower screen resolution is the reason for the long battery life, not only because the UI is using a lot less GPU to draw, but this goes to every app too - like youtube, that will run most videos at 720p while my note 9 will run them at 1440p if available. The workload for 720p and 1440p is a lot different and leads to different battery usage.Then we have games... for xs they will be it's native resolution in a lot of cases, but for the xr they will be 720p. And so on and so on... the resolution is playing a lot bigger role than: "oh, the UI is using so low on the CPU/GPU that the resolution doesn't matter." yeah, for the UI itself the difference would not be that great, but on the most consumed apps like videos/games/modern web pages - it will.
Wardrive86 - Tuesday, February 5, 2019 - link
I always look forward to your in depth reviews and architecture deep dives Andrei. I love your sustained performance tests..something only found at Anandtech currently. I honestly think you are the best writer Anandtech or any other tech site has had period...with that out of the way, I have one question and a potential request. Spec2006 shows the A12 having substantially better efficiency than it's competitors, finishing the finite tests faster with less total energy used by virtue of higher performance, but having higher average power draw. How would this correlate to an infinite test such as a high end 3d game like Shadowgun Legends or Asphalt 9? Would the higher average power draw remain at the same performance level of say a Snapdragon 835/845/Kirin 980? Also a request if you ever have time with your busy schedule, Could we get a sequel article to your 2015 article "The Mobile CPU core count debate" with more modern games and apps, comparisons of OpenGLES vs Vulkan on CPUs, etc.. I know I don't ask for much!Andrei Frumusanu - Wednesday, February 6, 2019 - link
> How would this correlate to an infinite test such as a high end 3d game like Shadowgun Legends or Asphalt 9?For infinite workloads you just use the perf/W metric:
https://www.anandtech.com/show/13392/the-iphone-xs...
https://www.anandtech.com/show/13503/the-mate-20-m...
Consequently if you're fps capped you can use Joules/frame but that's not a popular metric.
> Could we get a sequel article to your 2015 article "The Mobile CPU core count debate" with more modern games and apps
At some point.
zodiacfml - Wednesday, February 6, 2019 - link
Performance reminds me of my AMD Vega 56 on reasonably low graphic settings at 4k/UHD resolution, it uses only 60 to 80 watts while gaming. Changing just one or two graphics settings shoots to its default power limit which is 180 watts.Anyways, I hope Apple release an iPod touch this year based from this SoC. It is terribly impressive which is good for gaming.
CHJ - Wednesday, February 6, 2019 - link
I have been using the XR for the last few weeks. My previous phone was the Xperia XZ, and the one before that a 5s.I cannot stress enough how good the battery life is. I used to carry a 10000 mAh power brick around for a full day out just in case - that simply is not the case anymore. I can’t run this thing down below 20% (I do sometimes get close, meaning I probably will run down the XS on some days, especially taking into consideration battery degradation after some months). This has simplified my life quite a bit.
As for the display, I was worried about it, but I honestly do not notice the lower resolution compared to the XZ in day-to-day usage. In fact, all things considered (color accuracy and True Tone), this has a better display imo. The lower resolution certainly helps battery life as well.
The thicker bezels - this I do still notice, but the XR costs 330 USD less than the XS where I live, and a slightly worse display, the lack of a second lens and 3D Touch, and thicker bezels are acceptable compromises given the savings. And that amazing battery life, did I mention that? ;)
All in all, I am very satisfied with my purchase.
CHJ - Wednesday, February 6, 2019 - link
Some other observations:The weight is noticeable, and the width of the phone does not aid in getting a comfortable grip. My fingers cannot wrap over the edge when I need to reach the top half of the screen. If you have large hands, you’ll be better off, I think.
The stereo speakers are also much improved and genuinely useful. I find them to be sufficient for watching YouTube, which is pretty much all I need from phone speakers.