Battery Life

Battery life of a device is dictated by the SoC efficiency, screen efficiency and battery capacity. The Mi9 has an efficient SoC, and it should have an adequately efficient screen, however its battery capacity of 3300mAh is on the lower side compared to competitor devices this year, which are found to sport 3700-4000+ mAh units.

Web Browsing Battery Life 2016 (WiFi)

In the web-browsing test, the Mi9 ends up as expected on the lower half of our device database of recent flagships. The phone lands near where the G8 landed.

PCMark Work 2.0 - Battery Life

Similarly, in PCMark, the Mi9 ends up quite average in terms of its longevity. It’s not bad at all, but still remains as the lowest longevity of S855 devices, just a hair worse than the 90Hz mode of the OnePlus 7 Pro.

Overall while the Mi9 certainly doesn’t compete in battery to the likes of the Galaxy S10+, it should offer sufficient longevity to get most users through the day.

Display Measurement Camera - Daylight Evaluation
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  • Redmyth79 - Saturday, September 14, 2019 - link

    Who you calling troll, stating facts.
  • Korguz - Saturday, September 14, 2019 - link

    then back up your "facts " with proof, seems even Andrei doubts these " facts " of yours :
    " I accept your challenge. You play the AnTuTu card, you lose. "
    and from Ian as well : " AnTuTu is the laughing stock of benchmarks. The minute someone tries to justify their position with an AnTuTu score, you know not to take them seriously. "
  • Jon Tseng - Sunday, September 15, 2019 - link

    Yeah I'm not sure this troll even read the article, so I think asking for facts likely a bit of a tough ask. At all conclusion is that perf seems fine vs other devices.

    One point - I've seen discussed elsewhere that the 9T pro has an inferior thermal solution that the 9T so perf may not be quite as good. Jonathan.
  • PeachNCream - Friday, September 13, 2019 - link

    "AnandTech has reviewed this product as part of a paid partnership with Qualcomm."

    Is someone at AT permitted to go into greater detail about the nature of the partnership? What obligations is AT under? What are Qualcomm's expectations?
  • Andrei Frumusanu - Friday, September 13, 2019 - link

    We'll be posting three more S855 device reviews in the next 2 weeks, other than that and the inclusion of the benchmark setup (AI), there is no effect on the content of the articles posted and I'm writing the reviews independently as I would have in a normal scenario.
  • PeachNCream - Friday, September 13, 2019 - link

    Cool, thanks! That makes sense.
  • yeeeeman - Friday, September 13, 2019 - link

    The big problem here is that it takes up your bandwidth to look on other more interesting devices like the exynos 9825. Qualcomm is requesting these reviews for press, nothing else. But here at AT we care more about tech, so I think that in the future it is best to refuse these kinda of requests and sponsorships and do your own reviews
  • webdoctors - Friday, September 13, 2019 - link

    ?? but then who will pay them to keep the site running since everyone uses adblocker?
  • A5 - Friday, September 13, 2019 - link

    I've read literally nothing that indicated that the Exynos 9825 holds anything of significant interest to AT readers over Exynos 9820. Why do you keep asking about it?
  • Andrei Frumusanu - Friday, September 13, 2019 - link

    It's an interesting academic view on the 7EUV process node, but other than that yes it holds very little value currently.

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