Samsung Galaxy M51 vs Samsung Galaxy M31

Phones Images

PHONES
Phone Names	Samsung Galaxy M51	Samsung Galaxy M31

Network
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands	1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
Speed	HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps	HSPA, LTE
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE

Launch
Announced	2020, August 31. Released 2020, September 11	2020, February 25. Released 2020, March 05
Status	Discontinued	Discontinued

Body
Build	Glass front (Gorilla Glass 3+), plastic back, plastic frame	Glass front (Gorilla Glass 3), plastic back, plastic frame
Dimensions	163.9 x 76.3 x 9.5 mm (6.45 x 3.00 x 0.37 in)	159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
SIM	Nano-SIM + Nano-SIM	Nano-SIM + Nano-SIM
Weight	213 g (7.51 oz)	191 g (6.74 oz)

Display
Protection	Corning Gorilla Glass 3+	Corning Gorilla Glass 3
Resolution	1080 x 2400 pixels, 20:9 ratio (~393 ppi density)	1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size	6.7 inches, 108.4 cm2 (~86.7% screen-to-body ratio)	6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio)
Type	Super AMOLED Plus	Super AMOLED, 420 nits (peak)

Platform
CPU	Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Chipset	Qualcomm SDM730 Snapdragon 730G (8 nm)	Exynos 9611 (10 nm)
GPU	Adreno 618	Mali-G72 MP3
OS	Android 10, upgradable to Android 12, One UI 4.1	Android 10, upgradable to Android 12, One UI 4.1

Memory
Card slot	microSDXC (dedicated slot)	microSDXC (dedicated slot)
Internal	128GB 6GB RAM, 128GB 8GB RAM	64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
	-	UFS 2.1

Main Camera
Features	LED flash, panorama, HDR	LED flash, panorama, HDR
Quad	64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP (macro) Auxiliary lens	-
Triple	-	64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 5 MP (macro) Auxiliary lens
Video	4K@30fps, 1080p@30fps	4K@30fps, 1080p@30fps, gyro-EIS

Selfie camera
Features	HDR	HDR
Single	32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm	32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video	4K@30fps, 1080p@30fps	4K@30fps, 1080p@30fps

Sound
3.5mm jack	Yes	Yes
35mm jack	Yes	Yes
Loudspeaker	Yes	Yes

Comms
Bluetooth	5.0, A2DP, LE	5.0, A2DP, LE
NFC	Yes	Yes (market/region dependent)
Positioning	GPS, GLONASS, GALILEO, BDS	GPS, GLONASS, GALILEO, BDS
Radio	FM radio, RDS	FM radio, RDS, recording
USB	USB Type-C 2.0, OTG	USB Type-C 2.0
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

Features
Sensors	Fingerprint (side-mounted), accelerometer, gyro, proximity, compass	Fingerprint (rear-mounted), accelerometer, gyro, compass
	-	Virtual proximity sensing

Battery
Charging	25W wired, 100% in 115 min Reverse wired	15W wired
Type	Li-Po 7000 mAh	Li-Po 6000 mAh

Misc
Colors	Celestial Black, Electric Blue, White	Ocean Blue, Space Black, Red
Models	SM-M515F, SM-M515F/DSN	SM-M315F, SM-M315F/DS, SM-M315F/DSN
Price	About 470 EUR	About 310 EUR
SAR	1.38 W/kg (head)	0.52 W/kg (head)     0.69 W/kg (body)
SAR EU	0.61 W/kg (head)     1.45 W/kg (body)	0.48 W/kg (head)     1.13 W/kg (body)

Pricing
128GB 6GB RAM	-	C$ 885.00
RENEWED	-	£ 199.00

Tests
Battery life	Endurance rating 156h	-
Camera	Photo / Video	-
Display	Contrast ratio: Infinite (nominal)	-
Loudspeaker	-28.5 LUFS (Average)	-
Performance	AnTuTu: 266620 (v8) GeekBench: 1774 (v5.1) GFXBench: 15fps (ES 3.1 onscreen)	-

OUR TESTS
Battery (old)	Endurance rating 156h	-
Camera	Photo / Video	-
Display	677 nits max brightness (measured)	-
Loudspeaker	-28.5 LUFS (Average)	-
Performance	AnTuTu: 266620 (v8) GeekBench: 1774 (v5.1) GFXBench: 15fps (ES 3.1 onscreen)	-