Xiaomi Mi 9 SE vs Xiaomi 12X

51 out of 100

73 out of 100

Here we compared two smartphones: the 5.97-inch Xiaomi Mi 9 SE (with Qualcomm Snapdragon 712) that was released on February 20, 2019, against the Xiaomi 12X, which is powered by Qualcomm Snapdragon 870 and came out 35 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

Differences
Review
Specs
Benchmarks
Battery life
Camera
Comments

Key differences

An overview of the main advantages of each smartphone

Reasons to consider the Xiaomi Mi 9 SE

The rear camera has a 2x optical zoom
Weighs 21 grams less

Reasons to consider the Xiaomi 12X

2.7x better performance in AnTuTu Benchmark (806K versus 303K)
Higher display refresh rate – 120 Hz
Comes with 1430 mAh larger battery capacity: 4500 vs 3070 mAh
Shows 52% longer battery life (35:28 vs 23:16 hours)
Delivers 45% higher peak brightness (928 against 641 nits)
Supports higher wattage charging (67W versus 18W)
Newer Bluetooth version (v5.1)
Optical image stabilization
Has a 0.31 inch larger screen size
More recent OS version: Android 13 versus 11
Uses a faster type of memory: LPDDR5
Compatible with Wi-Fi 6 wireless networks
Stereo speakers

Review

Evaluation of Xiaomi Mi 9 SE and Xiaomi 12X crucial features

Display

Screen quality, color accuracy, brightness

Type	AMOLED	AMOLED
Size	5.97 inches	6.28 inches
Resolution	1080 x 2340 pixels	1080 x 2400 pixels
Aspect ratio	19.5:9	20:9
PPI	432 ppi	419 ppi
Refresh rate	60 Hz	120 Hz
Adaptive refresh rate	No	No
Max rated brightness	585 nits	500 nits
Max rated brightness in HDR	-	1100 nits
HDR support	Yes, HDR10	Yes, HDR10+
Screen protection	Corning Gorilla Glass 5	Gorilla Glass Victus
Screen-to-body ratio	84.1%	89.2%
Display features	- Always-On Display	- DCI-P3 - Always-On Display - DC Dimming

RGB color space	99.9%	98.6%
PWM	255 Hz	523 Hz
Response time	4.2 ms	1 ms
Contrast	∞ Infinity	∞ Infinity

Height	147.5 mm (5.81 inches)	152.7 mm (6.01 inches)
Width	70.5 mm (2.78 inches)	69.9 mm (2.75 inches)
Thickness	7.4 mm (0.29 inches)	8.16 mm (0.32 inches)
Weight	155 g (5.47 oz)	176 g (6.21 oz)
Waterproof	No	No
Rear material	Glass	Glass
Frame material	Metal	Metal
Colors	Gray, Blue, Purple	Black, Blue, Pink
Fingerprint scanner	Yes, in-display	Yes, in-display

Chipset	Qualcomm Snapdragon 712	Qualcomm Snapdragon 870
Max clock	2200 MHz	3200 MHz
CPU cores	8 (2 + 6)	8 (1 + 3 + 4)
Architecture	- 6 cores at 1.7 GHz: Kryo 360 Silver (Cortex-A55) - 2 cores at 2.3 GHz: Kryo 360 Gold (Cortex-A75)	- 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	1 MB	4 MB
Lithography process	10 nanometers	7 nanometers
Graphics	Adreno 616	Adreno 650
GPU shading units	256	1024
GPU clock	750 MHz	670 MHz
FLOPS	~384 GFLOPS	~1372.1 GFLOPS

CPU	97540	230693
GPU	53887	219195
Memory	70527	151434
UX	79142	202860
Total score	303447	806981

Max surface temperature	38.7 °C	37.6 °C
Stability	97%	98%
Graphics test	3 FPS	25 FPS
Graphics score	654	4254

Web score	5534	-
Video editing	5679	-
Photo editing	12940	-
Data manipulation	6018	-
Writing score	7916	-

RAM size	6 GB	8, 12 GB
Memory type	LPDDR4X	LPDDR5
Memory clock	1866 MHz	-
Channels	2	2

Storage size	64, 128 GB	128, 256 GB
Storage type	UFS 2.1	UFS 3.1
Memory card	No	No

Operating system	Android 9.0 (Can be upgraded to Android 11.0)	Android 11 (Can be upgraded to Android 13)
ROM	MIUI 12	MIUI 14
OS size	19 GB	29.3 GB

Capacity	3070 mAh	4500 mAh
Max charge power	18 W	67 W
Battery type	Li-Po	Li-Po
Replaceable	No	No
Wireless charging	No	No
Reverse charging	No	No
Fast charging	Yes, Quick Charge 4 (50% in 30 min)	Yes (78% in 30 min)
Full charging time	1:27 hr	0:48 hr

Battery life tests
Web browsing	07:00 hr	13:05 hr
Watching video	11:36 hr	16:44 hr
Gaming	04:00 hr	05:31 hr
Standby	79 hr	104 hr

Main camera
Matrix	48 megapixels	50 megapixels
Image resolution	8000 x 6000	8700 x 5800
Zoom	Optical, 2x	Digital
Flash	Dual LED	Dual LED
Stabilization	Digital	Optical
8K video recording	No	Up to 24FPS
4K video recording	Up to 30FPS	Up to 60FPS
1080p video recording	Up to 60FPS	Up to 60FPS
Slow motion	960 FPS (720p)	960 FPS (720p)
Angle of widest lens	123°	123°
Lenses	3 (48 MP + 8 MP + 13 MP)	3 (50 MP + 13 MP + 5 MP)
Wide (main) lens	- 48 MP - Aperture: f/1.8 - Focal length: 27 mm - Pixel size: 0.8 micron - Sensor: 1/2", Sony IMX586 (Exmor-RS CMOS) - Phase autofocus	- 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	- 8 MP - Aperture: f/2.4 - Focal length: 52 mm - Pixel size: 1.12 micron - Sensor: 1/4", Omnivision OV8856 (PureCel) - Phase autofocus	-
Ultra-wide lens	- 13 MP - Aperture: f/2.4 - Pixel size: 1.12 micron - Sensor: 1/3.1", Samsung S5K3L6 (ISOCELL CMOS)	- 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	- Bokeh mode - Pro mode

Selfie camera
Megapixels	20 megapixels	32 megapixels
Image resolution	5120 x 3840	6528 x 4896
Aperture	f/2.0	f/2.4
Focal length	18 mm	26 mm
Pixel size	0.9 microns	0.7 microns
Sensor type	BSI CMOS	CMOS
Sensor size	1/2.78"	1/3"
Video resolution	1080p (Full HD) at 30 FPS	1080p (Full HD) at 60 FPS

Wi-Fi standard	Wi-Fi 5 (802.11 a/b/g/n/ac)	Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Wi-Fi features	- Dual Band - 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	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 - USB-Host mode - OTG	- Charging - USB-Storage mode - OTG
GPS	GPS, GLONASS, Beidou, Galileo	GPS, GLONASS, Beidou, Galileo, NAVIC
NFC *	Yes	Depends on the region
Infrared port	Yes	Yes

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 *	15	-
5G support	No	Yes

Speakers	Mono	Stereo
Headphone audio jack	No	No
FM radio	No	No
Dolby Atmos	No	Yes

Category	Mid-range	Flagship
Announced	February 2019	December 2021
Release date	March 2019	December 2021
SAR (head)	1.39 W/kg	-
SAR (body)	1.39 W/kg	-
Sensors	- Hall-effect sensor - Barometer - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint	- Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint
Bundled charger	-	Yes, 67 W

Xiaomi Mi 9 SE vs Xiaomi 12X

Xiaomi Mi 9 SE vs Xiaomi 12X

Key differences

Review

Value for money

Tests and specifications

Display

Design and build

Performance

Benchmarks

Memory

Software

Battery

Camera

Connectivity

Sound

Other

Conclusion