Alcatel Idol 4s vs Alcatel Idol 4S with Windows vs Samsung Galaxy A51

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

Display

Size:

5.5 inches
5.5 inches
6.5 inches

Resolution:

2560 x 1440 pixels, 534 PPI
1920 x 1080 pixels, 401 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI

Technology:

AMOLED
AMOLED
Super AMOLED

Screen-to-body:

71.82 %
72.18 %
87.37 %

Features:

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

Hardware

System chip:

Qualcomm Snapdragon 652 8976
Qualcomm Snapdragon 820 MSM8996
Samsung Exynos 9611

Processor:

Octa-core, 1800 MHz, ARM Cortex-A72 and ARM Cortex-A53, 64-bit
Quad-core, 2150 MHz, Kryo, 64-bit
Octa-core, 2300 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm

GPU:

Adreno 510
Adreno 530
Mali-G72 MP3

RAM:

3GB LPDDR3
4GB LPDDR4
4GB LPDDR4

Internal storage:

32GB, available to use: 25 GB
64GB
128GB, available to use: 105.9 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 (6.0 Marshmallow)
Windows (10 Mobile)
Android (11, 10), Samsung One UI

Battery

Capacity:

3000 mAh
3000 mAh
4000 mAh

Type:

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

Battery life test results:

Charging:

Qualcomm Quick Charge 2.0
Fast charging
Fast charging

Camera

Rear:

Single camera
Single camera
Quad camera

Main camera:

16 MP (Autofocus)
21 MP (PDAF)
48 MP (PDAF)

Specifications:

Aperture size: F2.2; Sensor size: 1/2.4"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera:

12 MP (Ultra-wide)

Specifications:

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

Third camera:

5 MP (Macro)

Specifications:

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

Fourth camera:

5 MP (Depth information)

Specifications:

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

Video recording:

2560x1440 (QHD), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (120 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features:

Video calling
Video calling, Video sharing
Hyperlapse, EIS

Front:

8 MP (Flash)
8 MP (Wide Angle, Flash)
32 MP (HDR)

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

6.06 x 2.97 x 0.28 inches (153.9 x 75.4 x 6.99 mm)
6.05 x 2.97 x 0.28 inches (153.7 x 75.4 x 6.99 mm)
6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

Weight:

5.26 oz (149.0 g)
5.36 oz (152.0 g)
6.07 oz (172.0 g)

Materials:

Back: Glass; Frame: Metal
Back: Glass; Frame: Metal
Back: Plastic; Frame: Plastic

Biometrics:

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

Keys:

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

Colors:

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

Cellular

LTE (FDD):

Bands 1(2100), 3(1800), 7(2600), 8(900), 20(800 DD), 28(700 APT)
Bands 2(1900), 4(AWS-1), 12(700 a)
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), 39(1900+), 41(2600+)

UMTS:

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

SIM type:

Nano SIM
Nano SIM
Nano SIM

HD Voice:

Yes
Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Multiple speakers
Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features:

Album art cover, Background playback
Album art cover, Background playback
Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM, RDS
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

4.2
4.1
5.0

Wi-Fi:

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

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

Features:

Mass storage device, Charging
Mass storage device, OTG, Charging
Charging, OTG

Location:

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

Sensors:

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

Other:

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

Hearing aid compatible:

M4, T3

Regulatory Approval

FCC approval:

Date approved:

Jun 01, 2016
Nov 28, 2019

FCC ID value:

2ACCJN009 link
A3LSMA515FN link

Measured SAR:

Head:

0.80 W/kg
0.89 W/kg

Body:

0.27 W/kg
1.18 W/kg

Simultaneous Transmission:

1.59 W/kg
1.56 W/kg

Wireless Router:

0.27 W/kg
1.12 W/kg

Phablet:

2.76 W/kg

Buyers information

Price:

$ 400

User Manual:

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

Availability

Officially announced:

Feb 20, 2016
Nov 01, 2016
Dec 12, 2019
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
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