Samsung Galaxy S5 vs Samsung Galaxy A21s vs Samsung Galaxy A51 - specs comparison

Display

Size:

5.1 inches

6.5 inches

Resolution:

1920 x 1080 pixels, 432 PPI

1600 x 720 pixels, 20:9 ratio, 270 PPI

2400 x 1080 pixels, 20:9 ratio, 405 PPI

Technology:

Super AMOLED

TFT

Super AMOLED

Screen-to-body:

69.76 %

82.94 %

87.37 %

Colors:

16 777 216

Touchscreen:

Capacitive, Multi-touch

Features:

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

Proximity sensor

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

Hardware

System chip:

Qualcomm Snapdragon 801 MSM8974-AC

Samsung Exynos 850

Samsung Exynos 9611

Processor:

Quad-core, 2500 MHz, Krait 400, 32-bit, 28 nm

Octa-core, 2000 MHz, Arm Cortex-A55, 64-bit

Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

GPU:

Adreno 330

Mali-G76

Mali-G72 MP3

RAM:

2GB LPDDR3

3GB LPDDR4

4GB LPDDR4

Internal storage:

32GB

32GB (eMMC 5.1), available to use: 19.5 GB

128GB, available to use: 105.9 GB

Storage expansion:

microSDXC up to 128 GB

microSDXC up to 512 GB

Device type:

Smartphone

OS:

Android (6.0 Marshmallow, 5.1 Lollipop, 5.0 Lollipop, 4.4.4, 4.4.2), Samsung TouchWiz UI

Android (10), Samsung One UI

Android (11, 10), Samsung One UI

Battery

Capacity:

2800 mAh

5000 mAh

4000 mAh

Type:

Li - Ion, User replaceable

Li - Polymer, Not user replaceable

Battery life test results:

link

Charging:

Fast charging

Camera

Rear:

Single camera

Quad camera

Main camera:

16 MP (BSI sensor, PDAF)

48 MP (PDAF)

Specifications:

F2.2; 31 mm; 1/2.6"; 1.12 μm

F2.0; 26 mm; 1/2"; 0.8 μm

Second camera:

8 MP (Ultra-wide)

12 MP (Ultra-wide)

Specifications:

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

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

Third camera:

2 MP (Macro)

5 MP (Macro)

Specifications:

Aperture size: F2.4

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

Fourth camera:

2 MP (Depth information)

5 MP (Depth information)

Specifications:

Aperture size: F2.4

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

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (60 fps)

1920x1080 (Full HD) (30 fps)

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

Features:

HDR, Continuous autofocus, EIS, Video calling, Video sharing

Hyperlapse, EIS

Front:

2.1 MP

13 MP

32 MP (HDR)

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

5.59 x 2.85 x 0.32 inches (142 x 72.5 x 8.1 mm)

6.44 x 2.96 x 0.35 inches (163.7 x 75.3 x 8.9 mm)

6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

Weight:

5.11 oz (145.0 g)

6.77 oz (192.0 g)

6.07 oz (172.0 g)

Materials:

Back: Plastic

Back: Plastic; Frame: Plastic

Resistance:

Water, Dust; IP67

Biometrics:

Fingerprint (swipe)

2D Face unlock, Fingerprint (touch)

2D Face unlock, In-screen fingerprint

Features:

Touch sensitive control keys, Interchangeable covers, Notification light

Keys:

Left: Volume control; Right: Lock/Unlock key

Right: Volume control, Lock/Unlock key

Colors:

Black, Gold, Blue, White

Black, White, Blue, Red

Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Cellular

LTE (FDD):

Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)

Bands 1(2100), 2(1900), 3(1800), 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), 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), 40(2300), 41(2600+)

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

UMTS:

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

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

Data Speed:

LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

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

Dual SIM:

Yes

SIM type:

Micro SIM

Nano SIM

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack

Speakers:

Earpiece, Loudspeaker

Features:

Album art cover, Background playback

Dolby Atmos

Screen mirroring:

MHL

Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation, Video recording

for Noise cancellation

Connectivity & Features

Bluetooth:

4.0

5.0

Wi-Fi:

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

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

USB:

microUSB, USB 3.0

Type-C (reversible), USB 2.0

Features:

Mass storage device, OTG, Charging, Video out

Charging

Charging, OTG

HDMI:

Yes

Location:

GPS, A-GPS, Glonass

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

Sensors:

Accelerometer, Gyroscope, Pedometer, Compass, Hall (for flip covers), Gesture, Barometer, Step detector, Step counter

Accelerometer, Gyroscope

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

Other:

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

NFC

NFC, ANT+

Phone features

Notifications:

Haptic feedback, (MP3)

Other features:

Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval:

Date approved:

Nov 28, 2019

FCC ID value:

A3LSMA515FN link

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

Buyers information

Price:

€ 240

$ 400

User Manual:

This is the official Samsung Galaxy A21s User Guide in English provided from the manufacturer.

This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Feb 24, 2014

May 15, 2020

Dec 12, 2019