Nubia Z70S Ultra Display and Battery Life
- Muhammad Rehman
- Jun 10
- 3 min read
With the X70S Ultra, nubia continues to be one of the few makers to offer an underdisplay selfie camera, which let's you have a display without any visible cutouts - in most applications, at least. It's seemingly the same panel as the one on the Z70 Ultra before it, which is no bad thing.
The display has a diagonal of 6.85 inches, a pixel density of 430 ppi, a resolution of 2,688 x 1,216 pixels, and an aspect ratio of 19.9:9. The nubia, in contrast to the majority of other smartphones, has a maximum refresh rate of 144 Hz, with an additional 24 Hz available for games that are compatible. In our brightness testing, we measured just under 1,400nits in auto mode and a little over 600nits when you set it manually with the slider - virtually the same numbers as on the Z70 Ultra. Neither number is anything special, but neither is a cause for concern either.
The Z70S Ultra has a refresh rate of up to 144 Hz, but gaming is the only use for that peak value. In our testing, the in-house utility reported frame rates of up to 144 frames per second in both 3D and arcade games. As a result, you can anticipate mostly trouble-free high frame rates gaming, thanks, no small part, to the Snapdragon 8 Elite.
Aside from that, you have fixed refresh rates of 60, 90, and 120 Hz, and the display settings let you basically set hard limits on each of those values. Regardless of the mode, the phone will slow down to 60Hz when it is idle. The Z70S Ultra supports HDR10, but it lacks HDR10+ or Dolby Vision compliance. It's Widevine L1-certified and it should support high-res video playback of DRM-protected content - we checked and Netflix did allow FullHD playback, which wasn't our experience on the Z70 Ultra, so you can count that as an improvement.
Netflix did not, however, provide HDR to us. The phone (kind of) supports the Android Ultra HDR standard for displaying HDR photos with enhanced tone mapping and a brightness boost for highlights. It works in both Chrome (which was buggy on the previous model, but here it's all good) and Google Photos.
The thing is, though, that the phone's own images don't appear to support the standard, and the boost only shows up in compatible photos from other sources.
The Z70S Ultra has gotten a 600mAh battery capacity upgrade, with the new model's 6,600mAh number being higher than most. Like before, it's a silicon-carbon battery as well. The capacity increase didn't appear to bring much of an improvement in our Active Use test, though - the overall score has remained virtually the same.
However, the new model arrived at those nearly 13 hours later than the Z70 Ultra did for a variety of reasons. We observed a slight improvement in video playback and a more significant increase in the amount of time required to make a voice call; however, web browsing and gaming performed less well. Overall, the Z70S Ultra's results remain somewhere around good to very good - it's not a standout showing, but it's not strictly bad either.
The Z70S Ultra has its fair share of battery protection features. The Charge separation feature allows the phone to draw only enough power from the adapter to meet its current requirements without draining the battery, preventing excessive heat buildup when gaming, for instance. The same feature can be used to sort of make sure that the phone's battery doesn't charge more than a certain percentage, which could be good for the cell phone's health in the long run.
You can set the stepless slider to any number between 20% and 90% and the phone will charge the battery to that level and go into separation mode. There's a more straightforward path to a similar destination too - a simple toggle that will limit charging to 80%.
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