Apple iPhone 6s Plus vs Samsung Galaxy A51 vs Samsung Galaxy A21 - specs comparison

Display

Size:

5.5 inches

6.5 inches

Resolution:

1920 x 1080 pixels, 401 PPI

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

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

Technology:

IPS LCD

Super AMOLED

IPS LCD

Screen-to-body:

67.91 %

87.37 %

79.20 %

Peak brightness:

500 cd/m2 (nit)

Features:

Pressure-sensitive, Oleophobic coating, Scratch-resistant glass, Ambient light sensor, Proximity sensor

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

60Hz refresh rate, Ambient light sensor, Proximity sensor

Hardware

System chip:

Apple A9 APL1022

Samsung Exynos 9611

Mediatek Helio P35

Processor:

Dual-core, 1840 MHz, Twister, 64-bit

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

Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU:

PowerVR GT7600

Mali-G72 MP3

PowerVR GE8320

RAM:

2GB LPDDR4

4GB LPDDR4

3GB LPDDR4

Internal storage:

128GB, not expandable

128GB, available to use: 105.9 GB

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

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone

OS:

iOS (14.x, 13.x, 12.x, 11.x, 10.x, 9.x)

Android (11, 10), Samsung One UI

Android (10), Samsung One UI

Battery

Capacity:

2750 mAh

4000 mAh

Type:

Li - Ion, Not user replaceable

Li - Polymer, Not user replaceable

Battery life test results:

link

Charging:

Fast charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Single camera

Quad camera

Main camera:

12 MP (Sapphire crystal lens cover, OIS, PDAF, BSI sensor)

48 MP (PDAF)

16 MP (PDAF)

Specifications:

F2.2; 29 mm; 1/3"; 1.22 μm

F2.0; 26 mm; 1/2"; 0.8 μm

F1.8; 1/3.06"; 1 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: F2.2; 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 (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)

1920x1080 (Full HD) (30 fps)

Features:

OIS, Time-lapse video, Continuous autofocus, Video calling, Video sharing

Hyperlapse, EIS

Front:

5 MP (HDR)

32 MP (HDR)

13 MP

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

6.23 x 3.07 x 0.29 inches (158.2 x 77.9 x 7.3 mm)

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

6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight:

6.77 oz (192.0 g)

6.07 oz (172.0 g)

6.81 oz (193.0 g)

Materials:

Back: Aluminum

Back: Plastic; Frame: Plastic

Biometrics:

Fingerprint (touch)

2D Face unlock, In-screen fingerprint

Fingerprint (touch)

Features:

Notification light

Keys:

Left: Volume control; Right: Lock/Unlock key

Right: Volume control, Lock/Unlock key

Colors:

Gold, Silver, Rose gold, Space gray

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

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), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d)

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), 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+), 40(2300), 41(2600+)

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

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

UMTS:

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

Data Speed:

LTE-A Cat 6 (300/50 Mbit/s), HSPA, HSUPA

LTE-A, 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

HD Voice:

Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack

Speakers:

Earpiece, Loudspeaker

Features:

Album art cover, Background playback

Dolby Atmos

Screen mirroring:

Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation, Video recording

for Noise cancellation

Connectivity & Features

Bluetooth:

4.2

5.0

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; MIMO, Hotspot

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

USB:

Lightning

Type-C (reversible), USB 2.0

Features:

Charging, Mass storage device

Charging, OTG

Charging

Location:

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

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

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

Sensors:

Accelerometer, Gyroscope, Compass, Barometer

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

Accelerometer, Gyroscope, Compass

Other:

NFC, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync, AirDrop

NFC, ANT+

NFC

Hearing aid compatible:

M3, T4

M4, T3

Regulatory Approval

FCC approval:

Date approved:

Sep 09, 2015

Nov 28, 2019

Apr 17, 2020

FCC ID value:

BCG-E2944A link

A3LSMA515FN link

ZCASMA215U link

Measured SAR:

Head:

0.91 W/kg

0.89 W/kg

0.42 W/kg

Body:

1.14 W/kg

1.18 W/kg

1.27 W/kg

Simultaneous Transmission:

1.56 W/kg

1.27 W/kg

Wireless Router:

1.14 W/kg

1.12 W/kg

1.27 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 949

$ 400

$ 250

User Manual:

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

In The Box:

This is the official Samsung Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Sep 09, 2015

Dec 12, 2019

Apr 08, 2020