Xiaomi Mi Mix 4 vs Samsung Galaxy S9 Specs Comparison

Design

Dimensions
6.40 x 2.97 x 0.31 inches 162.6 x 75.4 x 8 mm	5.81 x 2.70 x 0.33 inches 147.7 x 68.7 x 8.5 mm
Weight
7.94 oz (225.0 g)	5.75 oz (163.0 g)
Materials
Back: Ceramic Frame: Aluminum	Back: Glass (Corning Gorilla Glass 5) Frame: Aluminum
Resistance
Splash, Dust; IP53	Water, Dust; IP68
Biometrics
Optical in-screen fingerprint	Iris scanner, 2D Face unlock, Fingerprint (touch)
Features
	Notification light
Keys
Right: Volume control, Lock/Unlock key	Left: Volume control, Other; Right: Lock/Unlock key
Colors
Ceramic Black, Ceramic White, Shadow Gray	Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue

Display

Size
6.7-inch	5.8-inch
Resolution
2400x1080px, 20:9 ratio, 395 PPI	2960x1440px, 18.5:9 ratio, 568 PPI
Technology
AMOLED	Super AMOLED
Refresh rate
120Hz
Screen-to-body
87.59 %	84.36 %
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 888+ SM8350-AC (5 nm)	Qualcomm Snapdragon 845 SDM845 (10 nm)
Processor
Octa-core Kryo 680 Prime	Octa-core 2800 MHz Kryo 385
GPU
Adreno 660	Adreno 630
RAM
8GB (LPDDR5)	4GB (LPDDR4)
Internal storage
128GB (UFS 3.1)	64GB
Storage expansion
not expandable	microSDXC up to 400 GB
OS
Android (11), MIUI 12.5 UI	Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity
4500 mAh	3000 mAh
Type
Li - Ion	Li - Ion
Charging
Fast charging, Qi wireless charging, Reverse wireless charging	Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
Charge speed
Wired: 120.0W Wireless: 50.0W

Camera

Rear
Triple camera	Single camera
Main camera
108 MP (OIS, Laser and PDAF) Aperture size: F1.9 Focal length: 24 mm Sensor size: 1/1.33" Pixel size: 0.8 μm	12 MP (OIS, PDAF) Aperture size: F1.5/F2.4 Sensor size: 1/2.55" Pixel size: 1.4 μm
Second camera
13 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 12 mm Sensor size: 1/3.06" Pixel size: 1.12 μm
Third camera
8 MP (Periscope, OIS, PDAF) Optical zoom: 5.0x
Flash
Dual LED	LED
Video recording
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (480 fps), 1280x720 (HD) (480 fps) HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking	3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps) HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video calling, Video sharing
Front
20 MP (Under-screen), Video capture: 1920x1080 (Full HD)	8 MP (Autofocus, HDR), Video capture: 2560x1440 (QHD) (30 fps)

Connectivity & Features

Bluetooth
5.2	5.0
WLAN
802.11 a,b,g,n,ac,ax(Wi-Fi 6) MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C, USB 3.1
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, NavIC, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC	NFC, ANT+

Multimedia

Headphones
No 3.5mm jack	3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Features
	32-Bit DAC, aptX-HD
Screen mirroring
	Wireless screen share
Radio
	FM
Additional microphone(s)
	Noise cancellation

Cellular

5G
Bands n1, n3, n5, n8, n28, n41, n77, n78, n79, SA, NSA, Sub-6
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)	Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500)	Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800), 8(900), 19(800)	Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s	LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA
Dual SIM
Yes
SIM type
Nano SIM	Nano SIM
HD Voice
Yes
VoLTE
Yes

Regulatory Approval

FCC approval
	Date approved: Jan 11, 2018 FCC ID value: A3LSMG960U
Measured SAR
	Head: 0.35 W/kg Body: 0.96 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 0.95 W/kg

Buyers information

MSRP
	$ 720
In The Box
Power adapter, USB Type-C data cable, Type-C to 3.5mm headphone cable, Mobile phone protective shell, Film (covered on the screen), Pins, Instructions (including three packs of certificates)

Availability

Officially announced
Aug 10, 2021	Feb 25, 2018

Alternative variants

With 256GB internal storage

Internal storage	256GB

International version

System chip	Samsung Exynos 9 9810 (10 nm)
Processor	Octa-core 2900 MHz Exynos M3 and ARM Cortex-A55
GPU	Mali-G72 MP18
FCC approval	Date approved: Dec 27, 2017 FCC ID value: A3LSMG960F
Measured SAR	Head: 0.26 W/kg Body: 1.00 W/kg Simultaneous Transmission: 1.56 W/kg Wireless Router: 1.04 W/kg

With 12GB RAM and 256GB internal storage

RAM	12GB
Internal storage	256GB

with Dual SIM

System chip	Samsung Exynos 9 9810 (10 nm)
Processor	Octa-core 2900 MHz Exynos M3 and ARM Cortex-A55
GPU	Mali-G72 MP18
Dual SIM	Yes

With 12GB RAM and 512GB internal storage

RAM	12GB
Internal storage	512GB

with 256 GB storage

Internal storage	256GB
MSRP	$ 820

with 128 GB storage

Internal storage	128GB
MSRP	$ 770

Links

Full specifications
Xiaomi Mi Mix 4 Specs	Samsung Galaxy S9 Specs
PhoneArena Review
	Samsung Galaxy S9 Review
User Reviews
	Samsung Galaxy S9 User Reviews