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Xiaomi Mi 9T vs Oppo Realme X

Here we compared two mid-range smartphones: the 6.39-inch Xiaomi Mi 9T (with Qualcomm Snapdragon 730) that was released on May 28, 2019, against the Oppo Realme X, which is powered by Qualcomm Snapdragon 710 and came out 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Mi 9T
  • The rear camera has a 2x optical zoom
  • Shows 16% longer battery life (100 vs 86 hours)
  • Delivers 43% higher maximum brightness (639 against 448 nits)
  • 17% better performance in AnTuTu Benchmark (250K versus 214K)
  • Has an ultra-wide angle camera lens
  • More energy-efficient CPU – Snapdragon 730
  • 41% faster in single-core GeekBench 5 test: 542 and 385 points
Reasons to consider the Oppo Realme X
  • Expandable storage via MicroSD card up to 256GB
  • Supports Dolby Atmos sound technology

Review

Display
Screen quality, color accuracy, brightness
70
Performance
CPU/GPU performance in apps and games
54
Battery
Battery life, charging type and speed
75
Camera
Photo and video recording quality
67
Connectivity
Networks, ports, data transmission
75
NanoReview score
Final comparison evaluation
66

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests
Phone:
vs

Display

Type AMOLED AMOLED
Size 6.39 inches 6.53 inches
Resolution 1080 x 2340 pixels 1080 x 2340 pixels
Aspect ratio 19.5:9 19.5:9
PPI 403 ppi 395 ppi
Refresh rate 60 Hz 60 Hz
HDR support Yes, HDR10 No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 5
Screen-to-body ratio 86.1% 85.72%
Display features - Always-On Display - Always-On Display
Display tests
RGB color space 95.1% -
PWM 245 Hz -
Response time 3.6 ms -
Contrast ∞ Infinity -
Max. Brightness
Mi 9T +43%
639 nits
448 nits
Sources: NotebookCheck [1]

Design and build

Height 156.7 mm (6.17 inches) 161.2 mm (6.35 inches)
Width 74.3 mm (2.93 inches) 76 mm (2.99 inches)
Thickness 8.8 mm (0.35 inches) 8.6 mm (0.34 inches)
Weight 191 gramm (6.74 oz) 191 gramm (6.74 oz)
Waterproof No No
Rear material Glass Plastic
Frame material Metal Plastic
Colors Black, Blue, Red White, Blue
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
86.1%
85.72%

Performance

Tests of Xiaomi Mi 9T and Oppo Realme X in the benchmarks
SoC
Chipset Qualcomm Snapdragon 730 Qualcomm Snapdragon 710
Max. clock 2200 MHz 2200 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 1.8 GHz: Kryo 470 Silver (Cortex-A55)
- 2 cores at 2.2 GHz: Kryo 470 Gold (Cortex-A76)
- 6 cores at 1.7 GHz: Kryo 360 Silver (Cortex-A55)
- 2 cores at 2.2 GHz: Kryo 360 Gold (Cortex-A75)
Lithography process 8 nanometers 10 nanometers
Graphics Adreno 618 Adreno 616
GPU clock 500 MHz 600 MHz
FLOPS ~386 GFLOPS ~384 GFLOPS
Memory
RAM size 6 GB 4, 6, 8 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64, 128 GB 64, 128 GB
Storage type UFS 2.1 UFS 2.1
Memory card No MicroSD
Memory card max. size - Up to 256 GB

Benchmarks

Geekbench 5 (Single-Core)
Mi 9T +41%
542
385
Geekbench 5 (Multi-Core)
Mi 9T +5%
1616
1538
AnTuTu Benchmark 8
Mi 9T +17%
250370
214496
AnTuTu Benchmark 8 Smartphone Scores (244th and 263rd place)

Software

Operating system Android 9.0 (Can be upgraded to Android 10) Android 9.0 (Can be upgraded to Android 10)
ROM MIUI 12 ColorOS 7
OS size 11.3 GB -

Battery

Specifications
Capacity 4000 mAh 3765 mAh
Charge power 18 W 20 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (45% in 30 min) Yes, VOOC 3.0 (55% in 30 min)
Full charging time 1:25 hr 1:20 hr

Battery life tests

Web browsing (Wi-Fi)
11:53 hr
Realme X +6%
12:27 hr
Watching videos (Player)
Mi 9T +10%
17:19 hr
15:58 hr
Talk (3G)
Mi 9T +17%
33:20 hr
28:33 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 48 megapixels
Image resolution 8000 x 6000 8000 x 6000
Zoom Optical, 2x Digital
Flash Dual LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS Up to 30FPS
1080p video recording Up to 240FPS Up to 120FPS
Slow motion 960 FPS (1080p) 960 FPS (720p)
Angle of widest lens 124° -
Lenses 3 (48 MP + 8 MP + 13 MP) 2 (48 MP + 5 MP)
Wide (main) lens - 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Sony IMX582 (Exmor-RS CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/1.7
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Sony IMX586 (Exmor-RS CMOS)
- Phase autofocus (Dual Pixel)
Telephoto lens - 8 MP
- Aperture: f/2.4
- Focal length: 53 mm
- Pixel size: 1.12 micron
- Sensor: 1/4", Omnivision OV8865 (BSI CMOS)
- Phase autofocus
-
Ultra-wide lens - 13 MP
- Aperture: f/2.4
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.1", Samsung S5K3L6 (ISOCELL CMOS)
-
Depth lens - - 5 MP
- Aperture: f/2.4
Camera features - Bokeh mode
- Pro mode
- RAW support
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 20 megapixels 16 megapixels
Image resolution 5184 x 3880 4608 x 3456
Aperture f/2.2 f/2.0
Focal length 18 mm 25 mm
Pixel size 0.8 microns 1 microns
Sensor type CMOS BSI CMOS
Sensor size 1/3.4" 1/3"
Video resolution 1080p (Full HD) при 30 FPS 1080p (Full HD) при 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5 5
Bluetooth features LE, A2DP LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- USB-Host mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou GPS, GLONASS, Beidou
NFC* Yes No
Infrared port No No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No No
LTE Cat* 12 15
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes No
Dolby Atmos No Yes
Speakers test
Max. loudness
Mi 9T +11%
89 dB
80 dB

Other

Category Mid-range Mid-range
Announced May 2019 May 2019
Release date June 2019 June 2019
Launch price ~ 275 USD ~ 211 USD
SAR (head) 1.34 W/kg 0.92 W/kg
SAR (body) 1.51 W/kg 1.58 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the display, performance, software, battery life, camera, and design are more important to you, then choose the Xiaomi Mi 9T. But if the sound is more of a priority – go for the Oppo Realme X.

Cast your vote

So, which phone would you choose?
3 (42.9%)
4 (57.1%)
Total votes: 7

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