Xiaomi Redmi 9T Review : Long-Life 48MP Smartphone!

Xiaomi Redmi 9T Review : Long-Life 48MP Smartphone!

Battery Life + Recharging, Performance

Xiaomi Redmi 9T : Battery Life

The Xiaomi Redmi 9T comes with a massive 6,000 mAh battery.

To test its battery life, we turned off Automatic Brightness, and set its display brightness to 50%.

Why 50%? That is actually slightly higher than the average indoor brightness level of 40% during the day, and is what we usually use in all our mobile battery life tests.

It is important to fix the brightness level, to make sure the screen brightness does not change as the ambient brightness changes.

We then ran the PCMark Work 2.0 battery life test until its battery capacity dropped to 20% several times, and this was the best result we obtained :

Work 2.0 Redmi 9T Black Shark
2 Pro
Galaxy
S20 Ultra
Galaxy
Note10+
Note20
Ultra
Battery Capacity 6,000 mAh 4,000 mAh 5,000 mAh 4,300 mAh 4,500 mAh
Battery Life 19 hrs
50 mins
12 hrs
25 mins
11 hrs
32 mins
10 hrs
32 mins
10 hrs
9 mins
Battery Utilisation
(per min.)
4.03 mAh 4.30 mAh 5.78 mAh 5.44 mAh 5.91 mAh
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Will you look at that? Almost 20 hours of battery life, and this was based on running work apps non-stop!

This is incredibly long battery life – almost twice as long as the Galaxy Note20 Ultra!

 

Xiaomi Redmi 9T : Recharging Speed

Take a look at how fast it recharges its 6,000 mAh battery.

Galaxy
S20 Ultra
Galaxy
Note10+
Note20
Ultra
Black Shark
2 Pro
Redmi 9T
Battery Capacity 5,000 mAh 4,300 mAh 4,500 mAh 4,000 mAh 6,000 mAh
Charger Output 25 watts 25 watts 25 watts 27 watts 18 watts
Recharging Time 57.5 mins 63 mins 66.5 mins 67 mins 184 mins
Recharging Speed
(per minute)
69.6 mAh 54.6 mAh 54.1 mAh 47.8 mAh 26.1 mAh
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The Xiaomi Redmi 9T may support 18 W charging, and even comes with a 22.5 watt fast charger, but it sure is slow at charging.

It takes over 3 hours to fully recharge its 6,000 mAh battery from 20% – almost twice as slow as the next slowest smartphone – the Black Shark 2 Pro!

 

Xiaomi Redmi 9T : Work Performance

We tested the Redmi 9T using PCMark, which simulates work applications like web browsing, playing video, writing text and editing photos.

Work 2.0 Note20
Ultra
Galaxy
Note10+
BS 2 Pro Galaxy
S10+
Redmi 9T
Mobile Platform Exynos
990
Exynos
9825
SD
855+
Exynos
9820
SD 662
Performance Score 10523 8981 8384 7846 5986
Web Browsing 8865 8293 6768 8583 5844
Video Editing 6232 9166 5948 5524 3423
Writing 11112 9579 9226 9076 6657
Photo Editing 30789 19376 17595 10710 12031
Data Manipulation 6825 6155 6339 6450 4799

The Qualcomm Snapdragon 662 is a mid-range mobile SoC released in early 2020. So it isn’t surprising to see that it’s only about half as fast as a flagship SoC like the Exynos 990.

Even so, it offers pretty good work performance at this price point. Unless you are comparing smartphones side-by-side, you probably won’t notice the difference.

 

Xiaomi Redmi 9T Gaming Performance : 3DMark

For gaming, we first tested the Redmi 9T using 3DMark, with these results :

3DMark Note20
Ultra
B Shark
2 Pro
Galaxy
Note10+
Galaxy
S10+
Redmi 9T
Device Exynos
990
SD
855+
Exynos
9825
Exynos
9820
SD 662
Sling Shot Extreme (OpenGL) 6642 6258 5037 4470 1174
Sling Shot Extreme (Vulkan) 5722 5386 4794 4314 1098
Sling Shot 8128 8127 4883 4343 1844

Needless to say, the Xiaomi Redmi 9T is no speedy Gonzales, when it comes to games.

On average, it only offers about 20% the gaming performance of a flagship chip like the Exynos 990, which powers the Galaxy Note20.

 

Xiaomi Redmi 9T Overall Performance : AnTuTu

We then tested the Redmi 9T using AnTuTu, yielding these results :

AnTuTu Note20
Ultra
B Shark
2 Pro
Galaxy
Note10+
Galaxy
S10+
Redmi 9T
Device Exynos
990
SD
855+
Exynos
9825
Exynos
9820
SD 662
AnTuTu Score 522735 434168 348397 330549 173559
CPU 146783 126170 101187 100272 64505
GPU 215205 188158 156700 149930 31734
Memory 89376 65052 72051 68188 40377
UX 71371 54788 18459 12159 36943

The Qualcomm Snapdragon 662 has decent CPU and memory performance, but falls short in the graphics department.

It’s good enough for work and the average mobile game. But don’t count on it to push the envelope when it comes to gaming.

Next Page > A Quick Wrap, Verdict + Award

 

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