Phone Comparison - Samsung Galaxy A7 (2017) vs Samsung Galaxy A31 vs Samsung Galaxy A21s

general General Info

Manufacturer Samsung Samsung Samsung
Announced January 2017 2020, March 24 Expected Announcement - May 2020
Status Coming Soon - January 2017 Coming Soon - April 2020 Rumored
Price Rs. 33,490 ($425.00) [Similarly Priced] - -
Colors Black, White, Gold, Pink Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White Black, White, Blue
Form Factor Candybar Candybar Candybar
Dimension 156.8 x 77.6 x 7.9 mm
(6.17 x 3.06 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 Dual-SIM 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) LTE (unspecified) LTE
Messaging SMS, MMS, EMail, IM
Build Features - Fingerprint Sensor
- Fingerprint Sensor (under display, optical)
- Fingerprint Sensor
Notification LED Yes - -

hardware Hardware and OS

OS Android OS, v6.0.1 (Marshmallow) Android 10.0 Android 10.0
User Interface - One UI 2.0 One UI 2.0
Processor 1.9 GHz Quad-core Cortex-A72 & 1.3 GHz Quad-core Cortex-A53, Exynos 7880 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-T860 MP4 Mali-G52 MC2 -
RAM 3 GB 6 GB 3 GB
Internal Memory 32 GB 128 GB 64 GB
External Memory microSD, up to 256 GB microSDXC microSDXC

display Display

Type Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 4 Super AMOLED Capacitive Touchscreen PLS TFT Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.7 inches 6.4 inches 6.55 inches
Resolution 1080 x 1920 pixels (386 ppi) 1080 x 2400 pixels (411 ppi) 720 x 1600 pixels (268 ppi)
Screen-to-Body Ratio 73.79% 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 48 MP + 8 MP + 5 MP + 5 MP 48 MP + 8 MP + 2 MP
Flash LED Flash LED flash LED Flash
Features Phase Detection Autofocus, f/1.9, Geo-tagging, Touch Focus, Face Detection, 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 1080p@30fps 1080p@30fps 1080p@30fps
Front Camera 16 MP [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 Cat6 300/50 Mbps, VoLTE HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth v4.2, A2DP, EDR, LE, ANT+ 5.0, A2DP, LE 5.0, A2DP, LE
Wi-Fi Wi-Fi 802.11 a/b/g/n, 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 (market dependant) Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS
Browser HTML5 Yes Yes

memory User Memory

Internal 32 GB, 3 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 256 GB 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
NFC NFC supported NFC not supported NFC supported

battery Battery

Type Non-removable Li-Ion battery Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Battery Charging 10W
Capacity 3600 mAh 5000 mAh 5000 mAh
Stand by - - -
Talk Time - - -