ZTE Nubia Z9 Battery Life Test

By 03:54 Tue, 27 Jul 2021 Comments


The ZTE Nubia Z9 left us with some mixed feelings after the review process, but the battery life was mostly in the green.

The 2,900mAh battery is about what you would expect from a phone with a 5.2" screen. The Nubia Z9 is neither the thinnest, nor the lightest phone around though so we were hoping for a bit more battery capacity. The phone is powered by Snapdragon 810, which isn’t known for power efficiency. It's a dual-SIM phone, but it all worked out well in the end.

Some people acquire dual-SIM phones becautilize they do a lot of talking and the Z9 can last 22+ hours worth of calls, which is a very fine result. We've seen some rare phones last 30+ hours but with 20+ hours of call time you would rarely be in a situation where calls eat up a significant part of the battery charge.

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Talk time

  • Samsung Galaxy Tab Pro 10.1 LTE

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    23:09h

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  • 22:20h

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    18:02h

  • LG G Flex2

    17:51h

  • Sony Xperia ZR

    17:48h

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    17:47h

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    17:38h

  • Nokia Lumia 735

    17:30h

  • vivo X5Max

    17:23h

  • Huawei Honor 6

    17:13h

  • Samsung Galaxy Note II N7100

    16:57h

  • HTC Desire 700 dual sim

    16:56h

  • Acer Liquid Jade S

    16:51h

  • Samsung Ativ Odyssey I930

    16:41h

  • Samsung I9295 Galaxy S4 Active

    16:40h

  • Nokia Lumia 930

    16:40h

  • LG G4

    16:40h

  • Sony Xperia Z3 Compact

    16:40h

  • Sony Xperia M2

    16:40h

  • Sony Xperia M2 Aqua

    16:39h

  • Motorola Moto E

    16:38h

  • Motorola Moto E Dual SIM

    16:38h

  • Meizu MX4

    16:25h

  • Sony Xperia Z3+

    16:13h

  • Sony Xperia Z

    16:03h

  • Samsung Galaxy K zoom

    16:01h

  • Microsoft Lumia 435 Dual SIM

    15:50h

  • Microsoft Lumia 435

    15:50h

  • Asus Zenfone 2 ZE551ML

    15:47h

  • Asus Zenfone 2 Deluxe ZE551ML

    15:47h

  • Samsung Galaxy S4 zoom

    15:32h

  • LG Optimus G E975

    15:30h

  • Archos 50 Diamond

    15:23h

  • Sony Xperia ZL

    15:22h

  • Nokia Lumia 720

    15:17h

  • ZTE Blade S6

    15:01h

  • Nokia Lumia 830

    14:56h

  • Meizu m1 note

    14:53h

  • Xiaomi Redmi 1S

    14:51h

  • HTC Desire 816

    14:46h

  • Motorola Moto X (2nd Gen)

    14:45h

  • Alcatel Idol X+

    14:41h

  • Huawei Honor 7

    14:33h

  • Xiaomi Mi Note

    14:31h

  • BlackBerry Q5

    14:31h

  • Sony Xperia E3

    14:28h

  • Microsoft Lumia 532 Dual SIM

    14:24h

  • Microsoft Lumia 532

    14:24h

  • HTC Desire 820

    14:17h

  • LG Nexus 4 E960

    14:17h

  • HTC Desire 820 dual sim

    14:17h

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  • Nokia Lumia 635

    14:17h

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    14:17h

  • Motorola Moto G 4G

    14:17h

  • Oppo Find 5

    14:17h

  • Pantech Discover

    14:17h

  • HTC One (M8)

    14:15h

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    14:14h

  • HTC Desire 510

    14:06h

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  • Motorola Moto G

    13:41h

  • HTC One

    13:38h

  • Huawei Ascdiscontinue P7

    13:36h

The ZTE Nubia Z9 continued to impress with its web browsing performance. At 12 hours and change it's among the top tier of phones, few manage more than that. The classy screen was at 250nits brightness during the test, which is slightly above average.

Web browsing

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    12:31h

  • HTC Desire 700 dual sim

    12:30h

  • HTC One (M8)

    12:29h


  • 12:18h

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    10:38h

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    8:27h

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    8:20h

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    8:17h

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  • Oppo N3

    8:16h

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    8:12h

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    8:05h

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    8:01h

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    8:01h

  • HTC One X+

    7:56h

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    7:54h

  • Asus Zenfone 2 Deluxe ZE551ML

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    7:42h

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    7:38h

  • Nokia Lumia 720

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    7:23h

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    7:11h

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    7:09h

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    7:06h

  • Sony Xperia C4 Dual

    7:05h

  • Gionee Elife S5.1

    7:04h

  • ZTE Blade S6

    7:01h

  • Lenovo S90 Sisley

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  • Motorola Moto G (2nd gen)

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  • Samsung S7710 Galaxy Xcover 2

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  • Yota YotaPhone 2

    6:23h

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    6:18h

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    6:16h

  • Samsung Galaxy S III I747

    6:16h

  • HTC One SV

    6:15h

  • Samsung Focus S I937

    6:15h

  • Nokia Lumia 510

    6:13h

  • Sony Xperia ZL

    6:04h

  • Samsung Galaxy mini 2 S6500

    6:03h

  • Samsung P6200 Galaxy Tab 7.0 Plus

    6:02h

  • HTC Windows Phone 8X

    6:01h

  • Oppo R819

    6:01h

  • Sony Xperia Z1

    5:59h

  • Sony Xperia ion LTE

    5:56h

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    5:55h

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    5:55h

  • Xiaomi Redmi Note

    5:53h

  • Samsung Rugby Smart I847

    5:53h

  • Pantech Burst

    5:51h

  • Nokia Lumia 1020

    5:50h

  • HTC DROID Incredible 4G LTE

    5:48h

  • Samsung Galaxy S Blaze 4G T769

    5:45h

  • Xiaomi Redmi 2

    5:41h

  • Nokia Lumia 920

    5:40h

  • Nokia Lumia 928

    5:36h

  • Samsung S8600 Wave 3

    5:34h

  • Samsung i927 Captivate Glide

    5:33h

  • Pantech Discover

    5:33h

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    5:33h

  • Oppo Find 5

    5:33h

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    5:28h

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    5:25h

  • Samsung Galaxy Note I717

    5:24h

  • HTC Desire 616 dual sim

    5:24h

  • Sony Xperia Z Ultra

    5:23h

  • Samsung Galaxy S Duos S7562

    5:23h

  • Microsoft Lumia 535 Dual SIM

    5:21h

  • HTC Sensation XL

    5:20h

  • Meizu MX 4-core

    5:19h

  • Nokia Lumia Icon

    5:17h

  • HTC Rezound

    5:16h

  • Sony Xperia acro S

    5:16h

  • HTC Desire X

    5:16h

  • LG Optimus G E975

    5:15h

  • Gionee Elife S5.5

    5:10h

The video test was when the Z9 ran into trouble, it barely cleared the 7 hour mark. That's a below average result and less than we expected after seeing the phone's performance in the first two tests.

Video playback

  • LG G Flex

    19:57h

  • Samsung Galaxy S6 active

    18:03h

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    16:35h

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    15:03h

  • Sony Xperia Z4 Tablet LTE

    14:58h

  • Samsung Galaxy E7

    14:57h

  • Motorola DROID RAZR MAXX

    14:17h

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    14:04h

  • Motorola DROID Turbo

    13:41h

  • Samsung Galaxy Note 3

    13:32h

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    13:12h

  • Samsung I9190 Galaxy S4 mini

    13:12h

  • Sony Xperia T2 Ultra

    13:12h

  • HTC One Max

    13:11h

  • Motorola Moto E (2nd gen)

    13:04h

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    12:53h

  • Samsung Galaxy Premier I9260

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    12:51h

  • Huawei Honor 6

    12:51h

  • Meizu MX4 Pro

    12:41h

  • Nokia Lumia 1520

    12:31h

  • Samsung I9505 Galaxy S4

    12:30h

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    12:28h

  • Sony Xperia C3 Dual

    12:22h

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    12:16h

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    12:12h

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    12:12h

  • Samsung Galaxy Tab Pro 10.1 LTE

    12:10h

  • LG AKA

    11:54h

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    11:47h

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    11:38h

  • Samsung P6800 Galaxy Tab 7.7

    11:37h

  • Samsung I9500 Galaxy S4

    11:29h

  • Samsung Galaxy Note II N7100

    11:27h

  • OnePlus One

    11:23h

  • HTC One (E8)

    11:16h

  • Oppo N1

    11:15h

  • Apple iPhone 6 Plus

    11:15h

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    11:15h

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    11:15h

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    11:15h

  • Meizu m1 note

    11:09h

  • Samsung Galaxy S5 mini

    11:02h

  • Asus PadFone X

    11:01h

  • BlackBerry Passport

    10:46h

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    10:44h

  • Samsung Galaxy Note Edge

    10:41h

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    10:35h

  • LG G Flex2

    10:35h

  • HTC Desire 816

    10:34h

  • Apple iPhone 5s

    10:31h

  • HTC Butterfly 2

    10:26h

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    10:23h

  • Nokia Lumia 735

    10:20h

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    10:12h

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    10:11h

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    10:11h

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    10:07h

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    10:04h

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    10:03h

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    10:01h

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    10:00h

  • Samsung Galaxy Express I8730

    10:00h

  • Huawei P8lite ALE-L04

    10:00h

  • Nokia Lumia 630

    10:00h

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    10:00h

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    9:58h

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    9:58h

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    9:54h

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    9:53h

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    9:49h

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    9:43h

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    9:43h

  • Microsoft Lumia 640 LTE

    9:43h

  • Microsoft Lumia 640 LTE Dual SIM

    9:43h

  • Samsung I8530 Galaxy Beam

    9:42h

  • Samsung Rugby Smart I847

    9:34h

  • Oppo R7

    9:33h

  • Meizu MX4

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    7:45h

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    7:11h

  • HTC Desire 820

    7:10h

  • HTC Desire 820 dual sim

    7:10h

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    7:03h

  • HTC One E9+

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You can expect around 70 hours of utilize before the ZTE Nubia Z9 battery runs dry, assuming you utilize only one SIM card. Plugging in a second SIM drops that to 59 hours becautilize of the increased standby usage. That's still comfortably over two days of average usage if you do an hour of calling, an hour of web browsing and an hour of video watching daily.




Note that the phone comes with a pretty powerful charger – 9V @ 1.5A. That's 13.5W of power, a bit less than the 15W achieved by Snapdragon's usual Quick Charge 2.0 setup (that's a 10% difference).

The battery testing procedure is described in detail in case you're interested in that.

Our proprietary score also includes a standby battery draw test, which is not featured in our test scorecard but is calculated in the total endurance rating.


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