Xiaomi Mi A3 vs Samsung Galaxy A51

$171.60 VIEW ON AMAZON
$299.91 VIEW ON eBay

Display

Size

6.1 inches
6.5 inches

Resolution

720 x 1560 pixels
1080 x 2400 pixels

Pixel density

282 PPI
405 PPI

Technology

Super AMOLED
Super AMOLED

Screen-to-body

82.56 %
87.37 %

Features

Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware & Performance

System chip

Qualcomm Snapdragon 665
Samsung Exynos 9611

Processor

Octa-core, 2000 MHz, Kryo 260, 64-bit, 11 nm
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

GPU

Adreno 610
Mali-G72 MP3

RAM

4GB
4GB

Internal storage

128GB
128GB

Storage expansion

microSDXC up to 256 GB
microSDXC up to 512 GB

OS

Android (9.0 Pie)
Android (10), Samsung One UI

Battery

Capacity

4030 mAh
4000 mAh

Type

Not user replaceable
Li - Polymer, Not user replaceable

Charging

Qualcomm Quick Charge 3.0
Fast charging

Camera

Rear

Triple camera
Quad camera

Main camera

48 megapixels
48 megapixels

Features

Phase-detection autofocus
Phase-detection autofocus

Second camera

8 megapixels
12 megapixels

Features

Ultra-wide
Ultra-wide

Third camera

2 megapixels
5 megapixels

Features

Depth information
Macro

Fourth camera

 
5 megapixels

Features

 
Depth information

Video recording

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features

Digital image stabilization, Video calling, Video sharing
Hyperlapse, Digital image stabilization

Front

32 megapixels
32 megapixels

Features

 
High Dynamic Range mode (HDR)

Design

Dimensions

6.04 x 2.83 x 0.33 inches (153.48 x 71.85 x 8.475 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

Weight

6.13 oz (174 g)
the average is 6.2 oz (177 g)
6.07 oz (172 g)
the average is 6.2 oz (177 g)

Materials

Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Plastic

Biometrics

2D Face unlock, In-screen fingerprint
2D Face unlock, In-screen fingerprint

Colors

Gray, Blue, White
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 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), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)

LTE (TDD)

Bands 38(2600), 40(2300)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

Multimedia

Headphones

3.5mm jack
3.5mm jack

Features

Album art cover, Background playback
Dolby Atmos

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

Type-C (reversible)
Type-C (reversible), USB 2.0

Features

Mass storage device, Charging
Charging, OTG

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass

Other

Infrared, VoIP, Tethering, Computer sync, OTA sync
NFC, ANT+

Phone features

Notifications

Music ringtones, Vibration
 

Other features

Voice dialing, Voice commands, Voice recording
 

Shopping information

In The Box

10W charger, USB Type-C cable, SIM eject tool, User guide, Soft case, Warranty card
 
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
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