Phone Comparison - Samsung Galaxy A40 vs Samsung Galaxy A31 vs Samsung Galaxy A21s

general General Info

Manufacturer Samsung Samsung Samsung
Announced March 2019 2020, March 24 Expected Announcement - May 2020
Status Coming Soon - April 2019 Coming Soon - April 2020 Rumored
Colors Black, White, Blue, Coral Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White Black, White, Blue
Form Factor Candybar Candybar Candybar
Dimension 144.3 x 69.1 x 7.9 mm
(5.68 x 2.72 x 0.31 in)
159.3 x 73.1 x 8.6 mm
(6.27 x 2.88 x 0.34 in)
8.9 mm thickness
(0.35 in thickness)
Weight - 185 g (6.53 oz) 191 g (6.74 oz)
SIM Type Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500) LTE (unspecified) LTE
Messaging
Build Features - Fingerprint Sensor
- Fingerprint Sensor (under display, optical)
- Fingerprint Sensor

hardware Hardware and OS

OS Android 9.0 (Pie) Android 10.0 Android 10.0
User Interface - One UI 2.0 One UI 2.0
Processor Octa-core (2x1.8 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53), Exynos 7885 Octa (14 nm) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55), Mediatek MT6768 Helio P65 (12nm) Octa-core 2.0 GHz, Exynos 850
GPU Mali-G71 Mali-G52 MC2 -
RAM 4 GB 6 GB 3 GB
Internal Memory 64 GB 128 GB 64 GB
External Memory microSD, up to 512 GB (dedicated slot) microSDXC microSDXC

display Display

Type Super AMOLED Capacitive Touchscreen Super AMOLED Capacitive Touchscreen PLS TFT Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.9 inches 6.4 inches 6.55 inches
Resolution 1080 x 2280 pixels (428 ppi) 1080 x 2400 pixels (411 ppi) 720 x 1600 pixels (268 ppi)
Screen-to-Body Ratio 86.97% 85.01% -
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio - -
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 16 MP + 5 MP 48 MP + 8 MP + 5 MP + 5 MP 48 MP + 8 MP + 2 MP
Flash LED Flash LED flash LED Flash
Features 16 MP, f/2.0, PDAF
5 MP, f/2.2, 12mm, (ultrawide)
Panorama, HDR
48 MP, f/2.0, (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.4, (macro)
5 MP, f/2.4, (depth)
panorama, HDR
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro)
Panorama, HDR
Video 2160p@30fps, 1080p@30fps 1080p@30fps 1080p@30fps
Front Camera 25 MP, 1080p@30fps [Similar] 20 MP, f/2.2, 0.8µm
HDR
1080p@30fps [Similar]
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat12 600/150 Mbps HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth 4.2, A2DP, LE 5.0, A2DP, LE 5.0, A2DP, LE
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
USB Type-C 1.0 reversible connector 2.0, Type-C 1.0 reversible connector, USB On-The-Go Yes
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS
Browser Yes Yes Yes

memory User Memory

Internal 64 GB, 4 GB RAM 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) 64 GB, 3 GB RAM or 32 GB, 3 GB RAM
Expandable Storage microSD, up to 512 GB (dedicated slot) microSDXC microSDXC
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor not present
Gyroscope Sensor gyroscope sensor present gyroscope sensor present gyroscope sensor not present
NFC NFC supported NFC not supported NFC supported

battery Battery

Type Non-removable Li-Po Battery Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Battery Charging 10W
Capacity 3100 mAh 5000 mAh 5000 mAh
Stand by - - -
Talk Time - - -