Samsung Galaxy A51 vs Xiaomi Redmi Note 9T Specs Comparison

Availability

Officially announced
Dec 12, 2019	Jan 08, 2021
Prices (MSRP)
$400	4GB/64GB - €229

Design

Dimensions
6.24 x 2.90 x 0.31 inches 158.5 x 73.6 x 7.9 mm	6.37 x 3.04 x 0.36 inches 161.9 x 77.3 x 9.05 mm
Weight
6.07 oz / 172.0 g	7.02 oz / 199.0 g
Materials
Back: Plastic Frame: Plastic	Back: Plastic
Resistance
	Splash
Biometrics
2D Face unlock, Optical in-screen fingerprint	2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue	Nightfall black, Daybreak purple

Display

Size
6.5-inch, 87.37% screen-to-body	6.5-inch, 83.65% screen-to-body
Type
Super AMOLED, 60Hz	IPS LCD, 60Hz
Resolution
2400x1080px, 20:9 ratio, 405 PPI	2340x1080px, 19.5:9 ratio, 395 PPI
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass 5
Features
	Oleophobic coating

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
1.7 (Good)	Untested

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Samsung Exynos 9611 (10 nm)	MediaTek Dimensity 800U (7 nm)
Processor
Octa-core 2300 MHz 4x2.3GHz Cortex-A73 4x1.7G​Hz Cortex-A53	Octa-core ARM Cortex-A76 and ARM Cortex-A55
GPU
Mali-G72 MP3	Mali-G57 MC3
Memory
4GB (LPDDR4)/128GB 6GB/128GB	4GB (LPDDR4)/64GB (UFS 2.1) 4GB/128GB
Storage expansion
microSDXC up to 512 GB	microSDXC up to 512 GB
OS
Android (11, 10)	Android (10)

Battery

Type
4000 mAh, Li - Polymer	5000 mAh
Charging
Fast charging	Fast charging
Charge speed
	Wired: 18.0W

PhoneArena Battery Tests

Battery Life Estimate

5h 22min

Browsing

11h 35min

Video

8h 35min

Gaming

6h 40min

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Triple camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
12 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 13 mm Pixel size: 1.12 μm	2 MP (Macro) Aperture size: F2.4 Pixel size: 1.75 μm
Third camera
5 MP (Macro) Aperture size: F2.4 Focal Length: 40 mm	2 MP (Depth information) Aperture size: F2.4 Pixel size: 1.75 μm
Fourth camera
5 MP (Depth information) Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p (120 fps), 720p (240 fps) Hyperlapse, EIS	4K UHD (30 fps), 1080p (120 fps), 720p (120 fps)
Front
32 MP (HDR) Video capture: 1080p	13 MP (Slow-motion videos) Video capture: 1080p

Connectivity & Features

Bluetooth
5.0	5.1
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g
USB
Type-C, USB 2.0	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC, Infrared

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Multiple speakers
Features
Dolby Atmos
Screen mirroring
Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

5G Bands
	Sub-6
4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32
4G (TDD) Bands
38, 39, 41	38, 40, 41, 42
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A, 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
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Nov 28, 2019 FCC ID value: A3LSMA515FN
Measured SAR
Head: 0.89 W/kg Body: 1.18 W/kg Simultaneous Transmission: 1.56 W/kg Wireless Router: 1.12 W/kg Phablet: 2.76 W/kg

Alternative variants

with 128GB storage

Memory	6GB/128GB

with 128GB storage

Memory	128GB (UFS 2.2)
Prices (MSRP)	€269

for Verizon

4G (FDD) Bands	2, 3, 4, 5, 7, 13, 20, 28, 66
3G Bands	5, 8, 2, 1

for AT&T

4G (FDD) Bands	2, 4, 5, 12, 13, 25, 26, 66, 71
4G (TDD) Bands	41

for Sprint

4G (FDD) Bands	2, 4, 5, 12, 13, 25, 26, 66, 71
4G (TDD) Bands	41

for Europe

4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66
4G (TDD) Bands	38, 40, 41
Dual SIM	Yes

Discover more

Full Specs Samsung Galaxy A51 Specs PA Review Samsung Galaxy A51 Review

Full Specs Xiaomi Redmi Note 9T Specs