Samsung Galaxy A3 (2017) vs Samsung Galaxy A40
Display
Display size
Resolution
Pixel density
Technology
Super AMOLED
Super AMOLED
Screen-to-body ratio
67.85 %
85.73 %
Features
Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Camera
Rear
Single camera
Dual camera
Main camera
Hardware Features
Autofocus, CMOS image sensor
Phase detection autofocus
Specifications
Aperture size: F1.9
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Second camera
5 megapixels
Hardware Features
Ultra-wide
Specifications
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Flash
LED
LED
Video recording
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
Features
Video calling, Video sharing
Hyperlapse, Video calling, Video sharing
Front
8 megapixels
25 megapixels
Design
Dimensions
Weight
the average is 6.1 oz (173 g)
the average is 6.1 oz (173 g)
Materials
Back: Glass; Frame: Aluminum
Back: Plastic
Resistance
Water, Dust; IP 68
Biometrics
Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Features
Touch sensitive control keys
Colors
Black, Gold, Pink, Blue
Black, Pink, Blue, White
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, Dolby Atmos
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
FM
Additional microphone(s)
for Noise cancellation
Hardware & Performance
System chip
Samsung Exynos 7 Octa 7870
Samsung Exynos 7 Octa 7885
Processor
GPU
Mali-T830 MP2
Mali-G71 MP2
RAM
Internal storage
16 GB
64 GB
Available to use
9.7 GB
49.4 GB
Storage expansion
microSDXC up to 256 GB
microSDXC up to 512 GB
OS
Android (7.0 Nougat, 6.0 Marshmallow)
Android (9.0 Pie), Samsung One UI
Connectivity & Features
Bluetooth
4.2
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
802.11 a, b, g, n, ac, dual-band; Hotspot, Wi-Fi Direct
USB
USB Type-C (reversible)
USB Type-C (reversible), USB 2.0
Features
Mass storage device, USB charging
Mass storage device
Location
GPS, A-GPS, Glonass
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Mobile Payment
Samsung Pay
Samsung Pay
Other
NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
Cellular
LTE (FDD)
Bands 1, 2, 3, 5, 7, 8, 20
Bands 1, 3, 5, 7, 8, 20
LTE (TDD)
Bands 40
Bands 38, 40, 41
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
Data
Dual SIM
Yes
SIM type
Nano SIM
Nano SIM
Battery
Capacity
2350 mAh
3100 mAh
Type
Not user replaceable
Li - Polymer, Not user replaceable
Charging
Samsung Adaptive Fast Charging
Talk time (3G)
the average is 23 h (1373 min)
the average is 23 h (1373 min)
Internet use
3G: 12 hours; LTE: 16 hours; Wi-Fi: 17 hours
3G: 9 hours; LTE: 11 hours; Wi-Fi: 11 hours
Music playback
41.00 hours
62.00 hours
Video playback
17.00 hours
14.00 hours
Phone features
Notifications
Haptic feedback
Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording
