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Specifications
 

Samsung Galaxy M31

Samsung Galaxy M21

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Samsung Galaxy M31
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Samsung Galaxy M31

Samsung Galaxy M21

Network
Technology GSM / HSPA / LTE GSM / HSPA / LTE
2G bands 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 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66 1, 3, 5, 7, 8, 20, 38, 40, 41
Speed HSPA, LTE HSPA, LTE
Launch
Announced 2020, February 25 2020, March 18
Status Available. Released 2020, March 05 Available. Released 2020, March 23
Body
Dimensions 159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) 159 x 75.1 x 8.9 mm (6.26 x 2.96 x 0.35 in)
3D size compare
Weight 191 g (6.74 oz) 188 g (6.63 oz)
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Display
Type Super AMOLED, 420 nits (peak) Super AMOLED, 420 nits (peak)
Size 6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio) 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio)
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
Platform
OS Android 10, upgradable to Android 12, One UI 4.1 Android 10, upgradable to Android 11, One UI 3.1 Core
Chipset Exynos 9611 (10 nm) Exynos 9611 (10 nm)
CPU Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU Mali-G72 MP3 Mali-G72 MP3
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM 64GB 4GB RAM, 128GB 6GB RAM
 UFS 2.1 UFS 2.1
Main Camera
Modules 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, f/2.4, (macro)
5 MP, f/2.2, (depth)
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.2, (depth)
Features LED flash, panorama, HDR LED flash, panorama, HDR
Video 4K@30fps, 1080p@30fps, gyro-EIS 4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS
Selfie Camera
Modules 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm 20 MP, f/2.2, 26mm (wide)
Features HDR HDR
Video 4K@30fps, 1080p@30fps 1080p@30fps
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Sound
Loudspeaker Yes Yes
3.5mm jack Yes Yes
Comms
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
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
NFC Yes (market/region dependent) Yes (market/region dependent)
Infrared port No No
Radio FM radio, RDS, recording FM radio, RDS, recording
USB USB Type-C 2.0 USB Type-C 2.0
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
 Virtual proximity sensing
Battery
Type Li-Po 6000 mAh, non-removable Li-Po 6000 mAh, non-removable
Charging 15W wired 15W wired
Misc
Colors Ocean Blue, Space Black, Red Midnight Blue, Raven Black
SAR 0.52 W/kg (head)     0.69 W/kg (body)     0.47 W/kg (head)    
SAR EU 0.48 W/kg (head)     1.13 W/kg (body)    
Models SM-M315F, SM-M315F/DS, SM-M315F/DSN SM-M215F, SM-M215F/DS, SM-M215F/DSN
Price About 310 EUR About 190 EUR

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