Notification Center

This is our new notification center. Inside, you will find updates on the most important things happening right now.

Notifications

Hmm, push notifications seem to be disabled in your browser. You can enable them from the 'Settings' icon in the URL bar of your browser.

www.phonearena.com

Samsung Galaxy A51 vs Motorola Moto G Power vs Samsung Galaxy A21

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

Comparison mode:

Display

Size:

6.5 inches
6.4 inches
6.5 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 405 PPI
2300 x 1080 pixels, 19:9 ratio, 397 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI

Technology:

Super AMOLED
IPS LCD
IPS LCD

Refresh rate:

60Hz
60Hz
60Hz

Screen-to-body:

87.37 %
83.79 %
79.20 %

Features:

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

Hardware

System chip:

Samsung Exynos 9611 (10 nm)
Qualcomm Snapdragon 665 SM6125 (11 nm)
Mediatek Helio P35 MT6765 (12 nm)

Processor:

Octa-core, 2300 MHz, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 2000 MHz, Kryo 260, 64-bit
Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit

GPU:

Mali-G72 MP3
Adreno 610
PowerVR GE8320

RAM:

4GB LPDDR4
4GB
3GB LPDDR4

Internal storage:

128GB, available to use: 105.9 GB
64GB (eMMC 5.1)
32GB (eMMC 5.1), available to use: 19.8 GB

Storage expansion:

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

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

4000 mAh
5000 mAh
4000 mAh

Type:

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

Battery life test results:

Charging:

Fast charging
Fast charging
Fast charging

Max charge speed:

Wired: 10.0W
Wired: 15.0W

Camera

Rear:

Quad camera
Triple camera
Quad camera

Main camera:

48 MP (PDAF)
16 MP (PDAF)
16 MP (PDAF)

Specifications:

Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 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; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

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

Specifications:

Aperture size: F2.4; Focal Length: 40 mm
Aperture size: F2.2; Pixel size: 1.75 μm
Aperture size: F2.4

Fourth camera:

5 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

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (60 fps)
1920x1080 (Full HD) (30 fps)

Features:

Hyperlapse, EIS
Time-lapse video, Hyperlapse, EIS

Front:

32 MP (HDR)
16 MP (EIS, HDR, Slow-motion videos)
13 MP

Video capture:

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

Design

Dimensions:

6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)
6.29 x 2.99 x 0.38 inches (159.85 x 75.84 x 9.63 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight:

6.07 oz (172.0 g)
7.02 oz (199.0 g)
6.81 oz (193.0 g)

Materials:

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

Resistance:

Splash

Biometrics:

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

Keys:

Right: Volume control, Lock/Unlock key
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
Smoke black
Black

Cellular

LTE (FDD):

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
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)

LTE (TDD):

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

UMTS:

Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
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, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 13/5 (400/75 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

SIM type:

Nano SIM
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

Features:

Dolby Atmos
Dolby Mobile

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM
FM

Additional microphone(s):

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

Features:

Charging, OTG
Charging
Charging

Location:

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

Sensors:

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

Other:

NFC, ANT+
NFC

Hearing aid compatible:

M4, T3

Regulatory Approval

FCC approval:

Date approved:

Nov 28, 2019
Apr 17, 2020

FCC ID value:

A3LSMA515FN
ZCASMA215U

Measured SAR:

Head:

0.89 W/kg
0.42 W/kg

Body:

1.18 W/kg
1.27 W/kg

Simultaneous Transmission:

1.56 W/kg
1.27 W/kg

Wireless Router:

1.12 W/kg
1.27 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 400
$ 250
$ 250

User Manual:

This is the official Samsu​ng Galaxy A51 User Guide in English provided from the manufacturer.
This is the official Motor​ola Moto G Power User Guide in English provided from the manufacturer.

In The Box:

Charger, USB Type-C cable, guides, SIM tool
This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Dec 12, 2019
Feb 07, 2020
Apr 08, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless