Samsung Galaxy Alpha vs Samsung Galaxy A3 (2017)

Display

Display size

4.7 inches
4.7 inches

Resolution

720 x 1280 pixels
720 x 1280 pixels

Pixel density

312 ppi
312 ppi

Technology

Super AMOLED
Super AMOLED

Screen-to-body ratio

70.22 %
67.85 %

Features

Scratch-resistant glass (Corning Gorilla Glass 4), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Camera

Rear

Single camera
Single camera

Main camera

12 megapixels
13 megapixels

Hardware Features

Autofocus, CMOS image sensor
Autofocus, CMOS image sensor

Specifications

Aperture size: F2.2; Focal length: 31 mm
Aperture size: F1.9

Flash

LED
LED

Video recording

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

Features

High Dynamic Range mode (HDR), Digital image stabilization
Video calling, Video sharing

Front

2.1 megapixels
8 megapixels

Design

Dimensions

5.21 x 2.58 x 0.26 inches (132.4 x 65.5 x 6.7 mm )
5.33 x 2.61 x 0.31 inches (135.4 x 66.2 x 7.9 mm)

Weight

4.06 oz (115 g)
the average is 6 oz (172 g)
4.87 oz (138 g)
the average is 6 oz (172 g)

Materials

Back: Plastic; Frame: Aluminum
Back: Glass; Frame: Aluminum

Resistance

 
Water, Dust; IP 68

Biometrics

Fingerprint (swipe)
Fingerprint (touch)

Features

Touch sensitive control keys
Touch sensitive control keys

Colors

Black, Gold, Gray, Blue, White
Black, Gold, Pink, Blue

Multimedia

Headphones

3.5 mm jack
3.5 mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
Album art cover, Background playback

Screen mirroring

DLNA
Wireless screen share

Radio

 
FM

Hardware & Performance

System chip

Samsung Exynos 5 Octa 5433
Samsung Exynos 7 Octa 7870

Processor

Octa-core, 1800 MHz, ARM Cortex-A15 and ARM Cortex-A7
Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm

GPU

Mali-T628 MP6
Mali-T830 MP2

RAM

2 GB
2 GB

Internal storage

32 GB
16 GB

Available to use

25 GB
9.7 GB

Storage expansion

 
microSDXC up to 256 GB

OS

Android (5.1 Lollipop, 4.4.4), Samsung TouchWiz UI
Android (7.0 Nougat, 6.0 Marshmallow)

Connectivity & Features

Bluetooth

4.0
4.2

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; Hotspot, Wi-Fi Direct

USB

microUSB, USB 2.0
USB Type-C (reversible)

Features

Mass storage device, USB charging
Mass storage device, USB charging

Location

GPS, A-GPS, Glonass
GPS, A-GPS, Glonass

Sensors

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

Mobile Payment

 
Samsung Pay

Other

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

Cellular

LTE (FDD)

Bands 1, 2, 3, 5, 7, 8, 20
Bands 1, 2, 3, 5, 7, 8, 20

LTE (TDD)

 
Bands 40

UMTS

850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

Data

LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 21.1 Mbit/s
LTE-A Cat 6 (300/50 Mbit/s), HSPA

SIM type

Nano SIM
Nano SIM

Battery

Capacity

1860 mAh
2350 mAh

Type

Li - Ion, User replaceable
Not user replaceable

Talk time (3G)

11.00 hours
the average is 23 h (1362 min)
17.00 hours
the average is 23 h (1362 min)

Internet use

 
3G: 12 hours; LTE: 16 hours; Wi-Fi: 17 hours

Music playback

37.00 hours
41.00 hours

Video playback

10.00 hours
17.00 hours

Phone features

Notifications

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Haptic feedback

Other features

Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval

 
 

Date approved

Aug 06, 2014
Dec 21, 2016

FCC ID value: A3LSMG850F link
FCC ID value: A3LSMA320F link

FCC measured SAR

 
 

Head

1.05 W/kg
0.45 W/kg

Body

0.48 W/kg
0.74 W/kg

Simultaneous Transmission

1.18 W/kg
1.56 W/kg

Wireless Router

0.71 W/kg
0.94 W/kg
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