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Samsung Galaxy A51 5G vs Xiaomi Redmi 9T vs Xiaomi Redmi Note 10

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

6.5 inches
6.5 inches
6.4 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 405 PPI
2340 x 1080 pixels, 19.5:9 ratio, 395 PPI
2400 x 1080 pixels, 20:9 ratio, 409 PPI

Technology:

Super AMOLED
IPS LCD
AMOLED

Refresh rate:

60Hz

Screen-to-body:

87.37 %
82.14 %
83.55 %

Peak brightness:

1100 cd/m2 (nit)

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip:

Samsung Exynos 980
Qualcomm Snapdragon 662 SM6115
Qualcomm Snapdragon 678

Processor:

Octa-core, 2200 MHz, ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm
Octa-core, 2000 MHz, Kryo 260, 64-bit, 11 nm
Octa-core, 2200 MHz, Kryo 460, 64-bit, 11 nm

GPU:

Mali-G76 MP5
Adreno 610
Adreno 612

RAM:

6GB LPDDR4
4GB
4GB LPDDR4

Internal storage:

128GB, available to use: 105.3 GB
64GB (UFS 2.1)
64GB (UFS 2.2)

Storage expansion:

microSDXC up to 1000 GB
microSDXC up to 512 GB
microSDXC up to 512 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (11, 10), Samsung One UI
Android (10)
Android (11), MIUI 12 UI

Battery

Capacity:

4500 mAh
6000 mAh
5000 mAh

Type:

Li - Polymer, Not user replaceable
Not user replaceable
Not user replaceable

Charging:

Fast charging
Fast charging, Reverse charging
Qualcomm Quick Charge 4+

Max charge speed:

Wired: 25.0W
Wired: 18.0W
Wired: 33.0W

Camera

Rear:

Quad camera
Quad camera
Quad camera

Main camera:

48 MP (PDAF)
48 MP (PDAF)
48 MP (Autofocus)

Specifications:

Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera:

12 MP (Ultra-wide)
8 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
Aperture size: F2.2
Aperture size: F2.2

Third camera:

5 MP (Macro)
2 MP (Macro)
2 MP (Macro)

Specifications:

Aperture size: F2.4; Focal Length: 40 mm
Aperture size: F2.4; Pixel size: 1.75 μm
Aperture size: F2.4

Fourth camera:

5 MP (Depth information)
2 MP (Depth information)
2 MP (Depth information)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.4; Pixel size: 1.75 μm
Aperture size: F2.4

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (480 fps)
1920x1080 (Full HD) (30 fps), 1280x720 (HD) (30 fps)
Yes

Features:

Hyperlapse, EIS

Front:

32 MP (HDR)
8 MP
13 MP

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

6.26 x 2.90 x 0.34 inches (158.9 x 73.6 x 8.7 mm)
6.39 x 3.04 x 0.38 inches (162.3 x 77.3 x 9.6 mm)
6.32 x 2.93 x 0.33 inches (160.46 x 74.5 x 8.29 mm)

Weight:

6.60 oz (187.0 g)
6.98 oz (198.0 g)
6.31 oz (178.8 g)

Materials:

Back: Plastic; Frame: Aluminum
Back: Plastic; Frame: Plastic

Resistance:

Splash
Splash; IP53

Biometrics:

2D Face unlock, In-screen fingerprint
2D Face unlock, Fingerprint (touch)
2D Face unlock, Fingerprint (touch)

Keys:

Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Prism cube black
Carbon gray, Twilight blue, Sunrise orange, Ocean green
Onyx Gray, Pebble White, Lake Green

Cellular

5G:

n41, n71, SA, NSA

LTE (FDD):

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), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)
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), 20(800 DD), 28(700 APT)

LTE (TDD):

Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS:

Bands 1(2100), 2(1900), 4(1700/2100), 5(850)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
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
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes
Yes

SIM type:

Nano SIM
Nano SIM

HD Voice:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Loudspeaker, Multiple speakers

Features:

Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
5.0

Wi-Fi:

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

USB:

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

Features:

Charging, OTG
Charging
Charging

Location:

GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, SBAS, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Compass
Accelerometer

Other:

NFC, ANT+
Infrared
Infrared

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Jul 15, 2020
Jan 19, 2021
Jan 26, 2021

FCC ID value:

A3LSMA516U
2AFZZJ19SL
2AFZZK7AG

Measured SAR:

Head:

1.18 W/kg
1.09 W/kg
1.09 W/kg

Body:

1.20 W/kg
0.72 W/kg
1.09 W/kg

Simultaneous Transmission:

3.25 W/kg
1.58 W/kg
1.59 W/kg

Wireless Router:

1.37 W/kg
1.10 W/kg
0.75 W/kg

Buyers information

Price:

$ 500
€ 159
$ 199

User Manual:

This is the official Samsu​ng Galaxy A51 5G User Guide in English provided from the manufacturer.

In The Box:

A to C USB Cable, Wall Adapter, SIM Pin/Ejector, Quick Start Guide, Terms & Conditions
22.5W adapter, USB-C cable, SIM eject tool, Soft case, User guide, Warranty card

Availability

Officially announced:

Apr 08, 2020
Jan 08, 2021
Mar 04, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless