Xiaomi Mi Mix 4 vs Samsung Galaxy S9 Specs Comparison

Availability

Officially announced
Aug 10, 2021	Feb 25, 2018
Prices (MSRP)
	$720

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, 87.59% screen-to-body	5.8-inch, 84.36% screen-to-body
Type
AMOLED, 120Hz, HDR	Super AMOLED, HDR
Resolution
2400x1080px, 20:9 ratio, 395 PPI	2960x1440px, 18.5:9 ratio, 568 PPI
Protection
Corning Gorilla Glass Victus	Corning Gorilla Glass 5

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
Untested	1 (Excellent)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 888+ SM8350-AC (5 nm)	Snapdragon 845 SDM845 (10 nm)
Processor
Octa-core Kryo 680 Prime	Octa-core 2800 MHz Kryo 385
GPU
Adreno 660	Adreno 630
Memory
8GB (LPDDR5)/128GB (UFS 3.1) 8GB/256GB 12GB/256GB 12GB/512GB	4GB (LPDDR4)/64GB 4GB/128GB 4GB/256GB
Storage expansion
not expandable	microSDXC up to 400 GB
OS
Android (11)	Android (10, 9.0 Pie, 8.0 Oreo)

Battery

Type
4500 mAh, Li - Ion	3000 mAh, 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
8K UHD (24 fps), 4K UHD (60 fps), 1080p (480 fps), 720p (480 fps) HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking	4K UHD (60 fps), 1080p (240 fps), 720p (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: 1080p	8 MP (Autofocus, HDR) Video capture: QHD (30 fps)

Connectivity & Features

Bluetooth
5.2	5.0
WLAN
a,b,g,n,ac,Wi-Fi 6 MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 2.0	Type-C, USB 3.1
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, NavIC, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou
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, 2, 3, 4, 5, 8, 12, 17, 18, 19, 20, 26, 28	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71
4G (TDD) Bands
34, 38, 39, 40, 41, 42	38, 39, 40, 41, 46
3G Bands
1, 2, 4, 5, 6, 8, 19	5, 8, 4, 2, 1
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

Alternative variants

With 256GB internal storage

Memory	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

Memory	12GB/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

Memory	12GB/512GB

with 256 GB storage

Memory	256GB
Prices (MSRP)	$820

with 128 GB storage

Memory	128GB
Prices (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