Xiaomi Mi 8 vs Samsung Galaxy A55 5G Specs Comparison

Display

Size
6.2-inch	6.6-inch
Resolution
2248 x 1080 px, 402 PPI	2400 x 1080 px, 20:9 ratio, 399 PPI
Technology
AMOLED	Super AMOLED
Refresh rate
	120Hz
Screen-to-body
83.66 %	84.30 %
Peak brightness
600 cd/m2 (nit)	550 cd/m2 (nit)
Features
HDR support, Pressure-sensitive, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 845 SDM845 (10 nm)	Exynos 1480 (5 nm)
Processor
Octa-core, 2800 MHz, Kryo 385, 64-bit	Octa-core, 4x 2.7GHz Cortex-A78 + 4x 2.0GHz Cortex-A55
GPU
Adreno 630	Yes
RAM
6GB (LPDDR4)	8GB
Internal storage
256GB	128GB
Storage expansion
	microSDXC
OS
Android (10, 9.0 Pie, 8.0 Oreo)	Android (14)
Device type
Smartphone	Smartphone

Battery

Capacity
3400 mAh	5000 mAh
Type
Li - Polymer, Not user replaceable	Not user replaceable
Charging
Qualcomm Quick Charge 4+	Fast charging
Max 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

Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page.

Camera

Rear
Dual camera	Triple camera
Main camera
12 MP (OIS, PDAF) Specifications: Aperture size: F1.8 Sensor size: 1/2.55" Pixel size: 1.4 μm	50 MP (OIS, Autofocus) Specifications: Aperture size: F1.8 Sensor size: 1/1.56" Pixel size: 1.0 μm
Second camera
12 MP (Telephoto, Autofocus) Specifications: Optical zoom: 2.0x Aperture size: F2.4 Focal Length: 56 mm Sensor size: 1/3.4" Pixel size: 1 μm	12 MP (Ultra-wide) Specifications: Aperture size: F2.2 Sensor size: 1/3.06" Pixel size: 1.12 μm
Third camera
	5 MP (Macro) Specifications: Aperture size: F2.4
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps) Features: Video calling, Video sharing	3840x2160 (4K UHD) (30 fps)
Front
20 MP (HDR)	32 MP, Video capture: 3840x2160 (4K UHD) (30 fps)

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

132

Overall

140

Photo

123

Video

Find out more details about photo and video scores for all phones we have tested on our PhoneArena Camera Score page.

Design

Dimensions
6.10 x 2.94 x 0.30 inches (154.9 x 74.8 x 7.6 mm)	6.34 x 3.05 x 0.00 inches (161.1 x 77.4 8.2 mm)
Weight
6.17 oz(175.0 g)	7.51 oz(213.0 g)
Materials
Back: Glass (Corning Gorilla Glass 5)	Back: Glass (Corning Gorilla Glass) Frame: Plastic
Resistance
	Yes; IP67
Biometrics
2D Face unlock, Fingerprint (touch)	In-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Blue, White	Iceblue, Lilac, Navy, Lemon

Cellular

5G
	Bands 5G Ready
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD)
4G (TDD)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM, eSIM
HD Voice
Yes
VoLTE
Yes

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Additional microphone(s)
Noise cancellation	Noise cancellation

Connectivity & Features

Bluetooth
5.0	5.3
Wi-Fi
802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,ax(Wi-Fi 6) Wi-Fi Direct, Hotspot
USB
Type-C (reversible), Features: Charging, Headphones port, Mass storage device	Type-C (reversible), Features: Charging
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer	Accelerometer, Gyroscope, Compass
Other
NFC, VoIP, Tethering, Computer sync, OTA sync	NFC

Buyers information

Price
	$ 489
In The Box
Mi 8 Protective cover / Power adapter / USB Type-C cable / Type-C to audio converter / SIM insertion tool / User guide

Availability

Officially announced
May 31, 2018	Mar 11, 2024

Links

Full specifications
Xiaomi Mi 8 Specs	Samsung Galaxy A55 5G Specs
PhoneArena Review
	Samsung Galaxy A55 5G Review