Samsung Galaxy M30s vs Samsung Galaxy M31s vs Samsung Galaxy M21s

General Info

Manufacturer
Samsung	Samsung	Samsung
Announced
August 2019	Not announced yet	November 2020
Status
Coming Soon - September 18, 2019	Rumored	Available - November 2020
Price
Rs. 13,999 ($0.00) [Similarly Priced]	-	-
Colors
Black, Blue	Ocean Blue, Space Black, Red	Blue, Black
Form Factor
Candybar	Candybar	Candybar
Dimension
-	-	159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
Weight
188 g (6.63 oz)	-	191 g (6.74 oz)
SIM Type
Dual SIM (Nano-SIM, dual stand-by)	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	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network
LTE	LTE	LTE
Messaging

Build Features
- Fingerprint Sensor	- Fingerprint Sensor	- Fingerprint Sensor

OS
Android 9.0 (Pie)	Android 10	Android 10
User Interface
One UI	One UI 2.0	One UI 2.5
Processor
Octa-Core (Quad 2.3GHz + Quad 1.7GHz), Exynos 9610 (10nm)	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm)	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm)
GPU
Mali-G72	Mali-G72 MP3	Mali-G72 MP3
RAM
6 GB	8 GB	4 GB
Internal Memory
128 GB	128 GB	128 GB
External Memory
microSD, up to 512 GB	No	microSDXC

Type
Full HD+ Infinity-U Super AMOLED Capacitive Touchscreen	Super AMOLED Capacitive Touchscreen	Super AMOLED Screen, 420 nits (typ), Corning Gorilla Glass 3
Colors
16M colors	16M colors	16M Colour
Size
6.4 inches	6.5 inches	6.4 inches
Resolution
1080 x 2340 pixels (403 ppi)	1080 x 2400 pixels (405 ppi)	1080 x 2340 pixels (403 ppi)
Screen-to-Body Ratio
-	-	83.97%
Multi-Touch

Rear Camera
48 MP + 8 MP + 5 MP	64 MP + 12 MP + 5 MP + 5 MP	64 MP + 8 MP + 5 MP
Flash
LED Flash	LED Flash	LED Flash
Features
48 MP, f/2.0, PDAF 8 MP, 12mm (ultrawide) 5 MP, f/2.2, depth sensor HDR, Panorama	64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 12 MP, f/2.2, (ultrawide) 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) Panorama, HDR	64 MP, (wide), PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.2, (depth) Panorama, HDR
Video
2160p@30fps, 1080p@30fps	4K@30fps, 1080p@30fps, gyro-EIS	4K@30fps, 1080p@30fps, gyro-EIS
Front Camera
16 MP, HDR, 1080p@30fps	32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps	32 MP, f/2.4, (wide), 1/2.8", 0.8µm HDR 1080p@30fps

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA, LTE-A	HSPA 42.2/5.76 Mbps, LTE-A	HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth
5.0, A2DP, LE	5.0, A2DP, LE	5.0, A2DP, LE
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB
2.0, Type-C 1.0 reversible connector	2.0, Type-C 1.0 reversible connector	USB Type-C 2.0
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS, GALILEO, BDS	Yes, with A-GPS, GLONASS, BDS
Browser
Yes	Yes	Yes

Fingerprint

Proximity Sensor

Accelerometer Sensor

Magnetic-field Sensor (Compass)

Gyroscope Sensor

NFC

Type
Non-removable Li-Po Battery Fast battery charging 15W	Non-removable Li-Po Battery Fast battery charging 25W	Non-removable Li-Po Battery Fast battery charging 15W
Capacity
6000 mAh	6000 mAh	6000 mAh
Stand by
-	-	-
Talk Time
-	-	-