The ZTE Axon 7 is flaunting a 5.5" AMOLED panel with a QHD resolution (1440 x 2560 pixels). With a pixel density of 538ppi and a 2.5D glass that very subtly goes to the edges of the phone, it's a gorgeous display to look at.
We measured the brightness of the display and it peaks at 352 nits, which isn't bright by today's standards. There are competitors out there which max out at 500 nits and beyond in bright conditions. Minimum brightness is 4.4 nits so it should go easy on the eyes when you use the phone in a dark place.
As for color reproduction accuracy, there are various screen modes to choose from, and the "colorful" one, surprisingly, has the smallest deviation of average DeltaE of 8. That's better than average but not among the best. The screen effects don't improve the color accuracy much, and neither do cool/warm modes.
|Display test||100% brightness|
|Black, cd/m2||White, cd/m2|
You'll have absolutely no problems using the Axon 7 outside, even in bright sunlight. The phone's sunlight contrast ratio is among the best around, in spite of the relatively low maximum brightness.
The ZTE Axon 7 features a 3250mAh Li-Po battery, which is a bit larger than the one found in the OnePlus 3 (3000mAh). Axon 7's battery features Qualcomm's Quick Charge 3.0 tech, which allows you to fill the battery up to 50% in 30 minutes.
Naturally, we put Axon 7's battery through its paces in our Endurance rating and the result is a rating of 70 hours (66 hours with the two SIM card slots filled in). That's slightly better than the OnePlus 3's result of 66 hours with a single SIM.
ZTE boasts the phone to last 16 hours of talk time and our test confirms this. And to take the comparison with the OnePlus 3 a step further, the Axon 7 manages to beat it in the web browsing test by a comfortable margin of 3 hours. In video playback, however, the Axon 7 lasts 2 hours and 30 minutes less.
ZTE has equipped the Axon 7 with a plethora of battery saving features. For starters, you have the "Smart power-save" option, which adjusts the CPU frequency according to usage scenarios. When the juice goes below 15%, the "ultra power saving mode" kick is. It makes the screen go black and white and disables Mobile data, Bluetooth and GPS, reduces brightness and enables faster sleep mode.
The battery testing procedure is described in detail in case you're interested in the nitty-gritties. You can also check out our complete battery test table, where you can see how all of the smartphones we've tested will compare under your own typical use.
The Axon 7 is properly equipped in terms of connectivity. The radio support includes up to four 2G bands, five 3G bands, and a slew of 4G bands. The LTE connectivity is Cat.7 which means up to 300Mbps downlink and up to 150Mbps uplink.
It comes with a hybrid nano-SIM/microSD slot. The secondary card can only hook to 2G networks while the primary one gets the full set of cellular connectivity.
There's a full set of a/b/g/n/ac Wi-Fi standards on both the 2.4GHz and 5GHz bands, Wi-Fi Direct, hotspot and DLNA media sharing on supported TVs and PCs.
The GPS support includes A-GPS and GLONASS. Sadly, there isn't an FM radio present.
A 3.5mm jack provides the standard audio connectivity option. There is the new USB Type-C connector for charging and data connections. Mind you, it defaults to charge-only every single time you connect it to a PC, and you have to manually switch the mode from the notification area if you want to do something else.