Xiaomi Mi 9 vs Samsung Galaxy A55 5G Specs Comparison

Availability

Officially announced
Feb 20, 2019	Mar 11, 2024
Prices (MSRP)
	$489

Design

Dimensions
6.20 x 2.94 x 0.30 inches 157.5 x 74.67 x 7.61 mm	6.34 x 3.05 x 0.00 inches 161.1 x 77.4 8.2 mm
Weight
6.10 oz / 173.0 g	7.51 oz / 213.0 g
Materials
Back: Glass (Corning Gorilla Glass 5) Frame: Metal	Back: Glass (Corning Gorilla Glass) Frame: Plastic
Resistance
	Water, Dust; IP67
Biometrics
Optical in-screen fingerprint	Optical in-screen fingerprint
Keys
	Right: Volume control, Lock/Unlock key
Colors
Black, Purple, Blue	Iceblue, Lilac, Navy, Lemon

Display

Size
6.4-inch, 85.23% screen-to-body	6.6-inch, 84.30% screen-to-body
Type
AMOLED, HDR, 600 nits	Super AMOLED, 120Hz, HDR, 550 nits
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	2400x1080px, 20:9 ratio, 399 PPI
Protection
Corning Gorilla Glass 6	Corning Gorilla Glass Victus
Features
HDR support, Oleophobic coating, Scratch-resistant glass, Ambient light sensor, Proximity sensor

PhoneArena Display Test

Bright Max (20% APL)
Untested	1510 (Good)
Bright Min
2 (Good)	1.3 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 855 (7 nm)	Exynos 1480 (5 nm)
Processor
Octa-core 2840 MHz Kryo 485	Octa-core 4x2.7GHz Cortex-A78 4x2.0G​Hz Cortex-A55
GPU
Adreno 640	Yes
Memory
6GB (LPDDR4)/128GB 6GB/64GB 12GB/256GB	8GB/128GB 8GB/256GB 12GB/256GB
Storage expansion
not expandable	microSDXC
OS
Android (9.0 Pie)	Android (14)

PhoneArena Performance Test

GeekBench 6 Single
Untested	1163
GeekBench 6 Multi
Untested	3487
3D Mark High
Untested	930
3D Mark Low
Untested	916

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
3300 mAh	5000 mAh, Li - Ion
Charging
Qualcomm Quick Charge 4+ Qi wireless charging	Fast charging
Charge speed
	Wired: 25.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

6h 36min

Browsing

17h 7min

Video

8h 15min

Gaming

9h 39min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Triple camera
Main camera
48 MP (Sapphire crystal lens cover, Laser and PDAF, CMOS image sensor) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	50 MP (OIS, Autofocus) Aperture size: F1.8 Sensor size: 1/1.56" Pixel size: 1.0 μm
Second camera
12 MP (Telephoto, Sapphire crystal lens cover, PDAF) Optical zoom: 2.0x Aperture size: F2.2 Focal Length: 50 mm Sensor size: 1/3.4" Pixel size: 1 μm	12 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/3.06" Pixel size: 1.12 μm
Third camera
16 MP (Ultra-wide, Sapphire crystal lens cover, PDAF) Aperture size: F2.2 Focal Length: 17 mm Sensor size: 1/3" Pixel size: 1 μm	5 MP (Macro) Aperture size: F2.4
Flash
Dual LED	LED
Video recording
4K UHD (60 fps), 1080p (960 fps), 720p (960 fps) Continuous autofocus, EIS, Video calling, Video sharing	4K UHD (30 fps)
Front
20 MP (HDR) Video capture: 1080p	32 MP Video capture: 4K UHD (30 fps)

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

132

Overall

140

Photo

123

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.0	5.3
WLAN
a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,n,ac,Wi-Fi 6 Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
Type-C, USB 2.0	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning
Other
NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync	NFC

Multimedia

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

Cellular

5G Bands
	n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n66, n77, n78, 5G Ready
4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28	1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 32, 66
4G (TDD) Bands
38, 39, 40	38, 40, 41
3G Bands
5, 8, 4, 2, 1	1, 2, 3, 5, 8
Data Speed
LTE-A, HSPA, HSUPA	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM, eSIM
HD Voice
Yes
VoLTE
Yes

Phone Features

Notifications
Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording

Alternative variants

with 64 GB storage

Memory	64GB

With 256GB internal storage

Memory	256GB

Explorer Edition

Memory	12GB/256GB

With 12GB RAM and 256GB internal storage

Memory	12GB/256GB

Discover more

Full Specs Xiaomi Mi 9 Specs PA Review Xiaomi Mi 9 Review

Full Specs Samsung Galaxy A55 5G Specs PA Review Samsung Galaxy A55 5G Review