Samsung Galaxy A3 (2017) vs Samsung Galaxy A40
Display
Size
Resolution
Technology
Super AMOLED
Super AMOLED
Screen-to-body
67.85 %
85.73 %
Features
Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
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
16GB
64GB
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
Battery
Capacity
2350 mAh
3100 mAh
Type
Not user replaceable
Li - Polymer, Not user replaceable
Charging
Samsung Adaptive Fast Charging
Camera
Rear
Single camera
Dual camera
Main camera
Features
Autofocus, CMOS image sensor
Phase-detection autofocus
Second camera
5 megapixels
Features
Ultra-wide
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 6.2 oz (176 g)
the average is 6.2 oz (176 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 sky, Gold sand, Peach cloud, Blue mist
Black, Coral, Blue, White
Cellular
LTE (FDD)
Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
LTE (TDD)
Bands 40(2300)
Bands 38(2600), 40(2300), 41(2600+)
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
SIM type
Nano SIM
Nano SIM
Multimedia
Headphones
3.5mm jack
3.5mm jack
Features
Album art cover, Background playback
Dolby Atmos, Album art cover, Background playback
Connectivity & Features
Bluetooth
4.2
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; Wi-Fi Direct, Hotspot
USB
Type-C (reversible)
Type-C (reversible), USB 2.0
Features
Charging, Mass storage device
Charging, Mass storage device
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other
NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
