Xiaomi Mi 11 Ultra vs Xiaomi 12X

Here we compared two flagship smartphones: the 6.81-inch Xiaomi Mi 11 Ultra (with Qualcomm Snapdragon 888) that was released on March 29, 2021, against the Xiaomi 12X, which is powered by Qualcomm Snapdragon 870 and came out 9 months after. 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 11 Ultra
  • Waterproof body (IP68 classification)
  • The rear camera has a 5x optical zoom
  • Has a 0.53 inch larger screen size
  • Supports wireless charging up to 67W
  • Newer Bluetooth version (v5.2)
  • Comes with 500 mAh larger battery capacity: 5000 vs 4500 mAh
  • 13% better performance in AnTuTu Benchmark (775K versus 688K)
  • Slow-motion recording at 1920FPS
  • 23% higher pixel density (515 vs 419 PPI)
Reasons to consider the Xiaomi 12X
  • Shows 39% longer battery life (35:28 vs 25:28 hours)
  • Weighs 58 grams less
  • The phone is 9-months newer

Review

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

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

Display

Type AMOLED AMOLED
Size 6.81 inches 6.28 inches
Resolution 1440 x 3200 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 515 ppi 419 ppi
Refresh rate 120 Hz 120 Hz
Max rated brightness 900 nits 500 nits
Max rated brightness in HDR 1500 nits 1100 nits
HDR support Yes, HDR10+ Yes, HDR10+
Screen protection Gorilla Glass Victus Gorilla Glass Victus
Screen-to-body ratio 91.4% 89.2%
Display features - DCI-P3
- Always-On Display
- DC Dimming
- DCI-P3
- Always-On Display
- DC Dimming
Display tests
RGB color space 99.8% 98.6%
PWM 510 Hz 523 Hz
Response time 2.8 ms 1 ms
Contrast ∞ Infinity ∞ Infinity
Peak brightness test (auto)
948 nits
928 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 164.3 mm (6.47 inches) 152.7 mm (6.01 inches)
Width 74.6 mm (2.94 inches) 69.9 mm (2.75 inches)
Thickness 8.4 mm (0.33 inches) 8.16 mm (0.32 inches)
Weight 234 gramm (8.25 oz) 176 gramm (6.21 oz)
Waterproof IP68 No
Rear material Ceramic Glass
Frame material Metal Metal
Colors White, Black Black, Blue, Pink
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
91.4%
89.2%

Performance

Tests of Xiaomi Mi 11 Ultra and Xiaomi 12X in the benchmarks
SoC
Chipset Qualcomm Snapdragon 888 Qualcomm Snapdragon 870
Max. clock 2840 MHz 3200 MHz
CPU cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4 cores at 1.8 GHz: Kryo 680 Silver (Cortex-A55)
- 3 cores at 2.42 GHz: Kryo 680 Gold (Cortex-A78)
- 1 core at 2.84 GHz: Kryo 680 Prime (Cortex-X1)
- 4 cores at 1.8 GHz: Kryo 585 Silver (Cortex-A55)
- 3 cores at 2.42 GHz: Kryo 585 Gold (Cortex-A77)
- 1 core at 3.2 GHz: Kryo 585 Prime (Cortex-A77)
L3 cache 4 MB 4 MB
Lithography process 5 nanometers 7 nanometers
Graphics Adreno 660 Adreno 650
GPU clock 840 MHz 675 MHz
FLOPS ~1720 GFLOPS ~1372 GFLOPS
Memory
RAM size 8, 12 GB 8, 12 GB
Memory type LPDDR5 LPDDR5
Memory clock 2750 MHz -
Channels 2 2
Storage
Storage size 128, 256, 512 GB 128, 256 GB
Storage type UFS 3.1 UFS 3.1
Memory card No No

Benchmarks

Geekbench 5 (Single-Core)
1134
Geekbench 5 (Multi-Core)
3493
3177
AnTuTu Benchmark 9
775812
688653
CPU 198271 185270
GPU 290845 242268
Memory 131669 108952
UX 151935 148511
Total score 775812 688653
3DMark Wild Life Performance
5308
4243
Stability 91% 99%
Graphics test 31 FPS 25 FPS
Graphics score 5308 4243
PCMark 3.0 score 13096 -
AnTuTu 9 Android Rating (106th and 155th place)
Sources: 3DMark [3], [4]

Software

Operating system Android 11 (Can be upgraded to Android 12) Android 11 (Can be upgraded to Android 12)
ROM MIUI 13 MIUI 13
OS size 31 GB 29.3 GB

Battery

Specifications
Capacity 5000 mAh 4500 mAh
Charge power 67 W 67 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging Yes (67 W) No
Reverse charging Yes, (wireless) No
Fast charging Yes (90% in 30 min) Yes (78% in 30 min)
Full charging time 0:37 hr 0:48 hr
Battery life tests
Web browsing 08:18 hr 13:05 hr
Watching video 12:44 hr 16:44 hr
Gaming 04:46 hr 05:31 hr
Standby 79 hr 104 hr
General battery life
25:28 hr
Xiaomi 12X +39%
35:28 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 50 megapixels 50 megapixels
Image resolution 8700 x 5800 8700 x 5800
Zoom Optical, 5x Digital
Flash Dual LED Dual LED
Stabilization Optical Optical
8K video recording Up to 24FPS Up to 24FPS
4K video recording Up to 60FPS Up to 60FPS
1080p video recording Up to 60FPS Up to 60FPS
Slow motion 1920 FPS (1080p) 960 FPS (720p)
Angle of widest lens 128° 123°
Lenses 3 (50 MP + 48 MP + 48 MP) 3 (50 MP + 13 MP + 5 MP)
Wide (main) lens - 50 MP
- Aperture: f/2.0
- Focal length: 24 mm
- Pixel size: 1.4 micron
- Sensor: 1/1.12", Samsung GN2 (ISOCELL Plus CMOS)
- Laser autofocus
- Optical stabilization
- 50 MP
- Aperture: f/1.9
- Focal length: 26 mm
- Pixel size: 1 micron
- Sensor: 1/1.56", Sony IMX766 (Exmor-RS CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
Telephoto lens - 48 MP
- Aperture: f/4.1
- Focal length: 120 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Sony IMX586 (Exmor-RS CMOS)
- Phase autofocus
- Optical stabilization
-
Ultra-wide lens - 48 MP
- Aperture: f/2.2
- Focal length: 12 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Sony IMX586 (Exmor-RS CMOS)
- Phase autofocus
- 13 MP
- Aperture: f/2.4
- Pixel size: 1.12 micron
- Sensor: 1/3.06", OmniVision OV13B10 (CMOS)
Macro lens - - 5 MP
- Aperture: f/2.4
- Focal length: 50 mm
- Pixel size: 1.12 micron
- Phase autofocus
- Optical stabilization
Camera features - Bokeh mode
- Pro mode
- RAW support
- Bokeh mode
- Pro mode
Samples Photo samples of Xiaomi Mi 11 Ultra from DxOMark -
Selfie camera
Megapixels 20 megapixels 32 megapixels
Image resolution 5380 x 3620 6528 x 4896
Aperture f/2.3 f/2.4
Focal length 27 mm 26 mm
Pixel size 0.8 microns 0.7 microns
Sensor type ISOCELL CMOS CMOS
Sensor size 1/3.4" 1/3"
Video resolution 1080p (Full HD) at 60 FPS 1080p (Full HD) at 60 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

Wi-Fi standard Wi-Fi 6E (802.11 a/b/g/n/ac/ax) Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.2 5.1
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo, QZSS, NAVIC GPS, GLONASS, Beidou, Galileo, NAVIC
NFC* Yes Depends on the region
Infrared port Yes Yes
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No -
Hybrid slot No No
LTE Cat* 24 -
5G support Yes Yes

Sound

Speakers Stereo Stereo
Headphone audio jack No No
FM radio No No
Dolby Atmos - Yes
Speakers test
Max. loudness
89.5 dB
90.1 dB

Other

Category Flagship Flagship
Announced March 2021 December 2021
Release date April 2021 December 2021
Sensors - Hall-effect sensor
- Barometer
- 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 performance, camera, and design are more important to you, then choose the Xiaomi Mi 11 Ultra. But if the battery life is more of a priority – go for the Xiaomi 12X.

Cast your vote

So, which phone would you choose?
51 (60.7%)
33 (39.3%)
Total votes: 84

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