Samsung Galaxy A21 vs Google Pixel 4a vs Google Pixel 4 - specs comparison

Display

Size:

6.5 inches

5.8 inches

5.7 inches

Resolution:

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

2340 x 1080 pixels, 19.5:9 ratio, 444 PPI

2280 x 1080 pixels, 19:9 ratio, 443 PPI

Technology:

IPS LCD

OLED

Screen-to-body:

79.20 %

82.53 %

77.32 %

Features:

60Hz refresh rate, Ambient light sensor, Proximity sensor

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

90Hz refresh rate, HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip:

Mediatek Helio P35

Qualcomm Snapdragon 730 SM7150-AA

Qualcomm Snapdragon 855 SM8150

Processor:

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

Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm

Octa-core, 2840 MHz, Kryo 485, 64-bit, 7 nm

GPU:

PowerVR GE8320

Adreno 618

Adreno 640

RAM:

3GB LPDDR4

6GB LPDDR4

Internal storage:

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

128GB, not expandable

64GB, not expandable

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone

OS:

Android (10), Samsung One UI

Android (11, 10)

Battery

Capacity:

4000 mAh

3140 mAh

2800 mAh

Type:

Li - Polymer, Not user replaceable

Not user replaceable

Battery life test results:

link

Charging:

Fast charging

USB Power Delivery

USB Power Delivery, Qi wireless charging

Max charge speed:

Wired: 15.0W

Wired: 18.0W

Camera

Rear:

Quad camera

Single camera

Dual camera

Main camera:

16 MP (PDAF)

12.2 MP (OIS, PDAF)

Specifications:

F1.8; 1/3.06"; 1 μm

F1.7; 27 mm; 1/2.55"; 1.4 μm

F1.7; 28 mm; 1/2.55"; 1.4 μm

Second camera:

8 MP (Ultra-wide)

16 MP (Telephoto, OIS, PDAF)

Specifications:

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

Aperture size: F2.4; Focal Length: 45 mm; Pixel size: 1 μm

Third camera:

2 MP (Macro)

Specifications:

Aperture size: F2.4

Fourth camera:

2 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

1920x1080 (Full HD) (30 fps)

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

Features:

EIS

OIS, Time-lapse video, EIS

Front:

13 MP

8 MP

8 MP (Dual-Camera, Time-of-Flight (ToF))

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

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

5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)

5.79 x 2.71 x 0.32 inches (147.1 x 68.8 x 8.2 mm)

Weight:

6.81 oz (193.0 g)

5.04 oz (143.0 g)

5.71 oz (162.0 g)

Materials:

Back: Plastic; Frame: Plastic

Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum

Resistance:

Water, Dust; IP68

Biometrics:

Fingerprint (touch)

3D Face unlock

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Black

Just black

Just black, Clearly white, Oh so orange

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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 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), 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+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

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

Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

UMTS:

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

Data Speed:

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

LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes

SIM type:

Nano SIM

Nano SIM, eSIM

HD Voice:

Yes

Multimedia

Headphones:

3.5mm jack

No 3.5mm jack

Speakers:

Earpiece, Loudspeaker

Earpiece, Multiple speakers

Features:

aptX, aptX-HD

aptX-HD

Screen mirroring:

Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0

5.1

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; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0

Type-C (reversible), USB 3.1

Features:

Charging

Charging, Headphones port

Location:

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

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

Sensors:

Accelerometer, Gyroscope, Compass

Accelerometer, Gyroscope, Compass, Barometer

Other:

NFC

Hearing aid compatible:

M4, T3

M3, T4

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Apr 17, 2020

Jun 25, 2020

Sep 03, 2019

FCC ID value:

ZCASMA215U link

A4RG025J link

A4RG020I link

Measured SAR:

Head:

0.42 W/kg

1.18 W/kg

1.20 W/kg

Body:

1.27 W/kg

1.19 W/kg

1.34 W/kg

Simultaneous Transmission:

1.27 W/kg

1.59 W/kg

Wireless Router:

1.27 W/kg

1.00 W/kg

1.01 W/kg

Buyers information

Price:

$ 250

$ 349

$ 799

In The Box:

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

18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool

18W USB-C power adapter, 1m USB-C to USB-C cable, Quick Start Guide, Quick Switch Adapter, SIM tool

Availability

Officially announced:

Apr 08, 2020

Aug 03, 2020

Oct 15, 2019