Samsung Galaxy A51 vs realme 7 vs Google Pixel 4a

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

Display

Size:

6.5 inches
6.5 inches
5.8 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 405 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI

Technology:

Super AMOLED
IPS LCD
OLED

Screen-to-body:

87.37 %
83.31 %
82.53 %

Features:

60Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
90Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass), Ambient light sensor, Proximity sensor
60Hz refresh rate, HDR support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip:

Samsung Exynos 9611
MediaTek Helio G95
Qualcomm Snapdragon 730 SM7150-AA

Processor:

Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm
Octa-core, 2050 MHz, Arm Cortex-A76 and Arm Cortex-A55, 64-bit, 12 nm
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm

GPU:

Mali-G72 MP3
Mali G76 MC4
Adreno 618

RAM:

4GB LPDDR4
4GB LPDDR4
6GB LPDDR4

Internal storage:

128GB, available to use: 105.9 GB
64GB (UFS 2.1)
128GB, not expandable

Storage expansion:

microSDXC up to 512 GB
microSDXC

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

4000 mAh
5000 mAh
3140 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
USB Power Delivery

Max charge speed:

Wired: 30.0W
Wired: 18.0W

Camera

Rear:

Quad camera
Quad camera
Single camera

Main camera:

48 MP (PDAF)
48 MP (PDAF)
12.2 MP (OIS, PDAF)

Specifications:

Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Second camera:

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

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
Aperture size: F2.3; Focal Length: 16 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera:

5 MP (Macro)
2 MP (Macro)

Specifications:

Aperture size: F2.4; Focal Length: 40 mm
Aperture size: F2.4

Fourth camera:

5 MP (Depth information)
2 MP (Black and White)

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

Features:

Hyperlapse, EIS
EIS
EIS

Front:

32 MP (HDR)
16 MP (Slow-motion videos)
8 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)
6.39 x 2.97 x 0.37 inches (162.3 x 75.4 x 9.4 mm)
5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)

Weight:

6.07 oz (172.0 g)
6.93 oz (196.5 g)
5.04 oz (143.0 g)

Materials:

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

Biometrics:

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

Keys:

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

Colors:

Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Mist blue, Mist white
Just 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), 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), 14(700 PS), 17(700 b), 18(800 Lower), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

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

UMTS:

Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)

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
LTE-A Cat 11 (600/75 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes
Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM, eSIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

Dolby Atmos
aptX, aptX-HD

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
5.1

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; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1

Features:

Charging, OTG
Charging, OTG
Charging

Location:

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

Sensors:

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

Other:

NFC, ANT+
NFC
NFC

Hearing aid compatible:

M3, T4

Regulatory Approval

FCC approval:

Date approved:

Nov 28, 2019
Jun 25, 2020

FCC ID value:

A3LSMA515FN link
A4RG025J link

Measured SAR:

Head:

0.89 W/kg
1.18 W/kg

Body:

1.18 W/kg
1.19 W/kg

Simultaneous Transmission:

1.56 W/kg
1.59 W/kg

Wireless Router:

1.12 W/kg
1.00 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 400
€ 179
$ 349

User Manual:

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

In The Box:

30W Dart Charger, USB Type-C Cable, Protect Case, Protect Film, SIM Card Tool, Important Info Booklet with Warranty Card
18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool

Availability

Officially announced:

Dec 12, 2019
Oct 07, 2020
Aug 03, 2020
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