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Samsung Galaxy A31
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Samsung Galaxy M21
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Samsung Galaxy A31

Samsung Galaxy M21
Our video review on Youtube
Network
Technology GSM / HSPA / LTE GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 - SM-A315F HSDPA 850 / 900 / 1900 / 2100
  HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - SM-A315G
4G Network 1, 2, 3, 5, 7, 8, 20, 38, 40, 41 - SM-A315F 1, 3, 5, 7, 8, 20, 38, 40, 41
  1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 38, 40, 41, 66 - SM-A315G
Speed HSPA, LTE HSPA, LTE
Launch
Announced 2020, March 24 2020, March 18
Status Available. Released 2020, April 27 Available. Released 2020, March 23
Body
Dimensions 159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) 159 x 75.1 x 8.9 mm (6.26 x 2.96 x 0.35 in)
3D size compare
Weight 185 g (6.53 oz) 188 g (6.63 oz)
Build Glass front (Gorilla Glass 3), plastic back, plastic frame
SIM Nano-SIM
Nano-SIM + Nano-SIM		 Nano-SIM
Nano-SIM + Nano-SIM
Display
Type Super AMOLED Super AMOLED, 420 nits (peak)
Size 6.4 inches, 98.9 cm2 (~84.9% screen-to-body ratio) 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~411 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Protection Corning Gorilla Glass 3
Platform
OS Android 10, up to Android 12, One UI 4.1 Android 10, upgradable to Android 11, One UI 3.1 Core
Chipset Mediatek MT6768 Helio P65 (12 nm) Exynos 9611 (10 nm)
CPU Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU Mali-G52 MC2 Mali-G72 MP3
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM 64GB 4GB RAM, 128GB 6GB RAM
 eMMC 5.1 UFS 2.1
Main Camera
Modules 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 123˚, (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.4, (macro)
5 MP, f/2.4, (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 1080p@30fps 4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS
Selfie Camera
Modules 20 MP, f/2.2, (wide) 20 MP, f/2.2, 26mm (wide)
Features HDR
Video 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, OTG USB Type-C 2.0
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
 Virtual proximity sensing
Battery
Type Li-Po 5000 mAh Li-Po 6000 mAh
Charging 15W wired 15W wired
Misc
Colors Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White Midnight Blue, Raven Black
SAR 0.47 W/kg (head)    
SAR EU 0.49 W/kg (head)     1.68 W/kg (body)    
Models SM-A315F, SM-A315F/DS, SM-A315G/DS, SM-A315G, SM-A315N SM-M215F, SM-M215F/DS, SM-M215F/DSN
Price £ 139.99 / € 239.99 About 190 EUR
Tests
Performance AnTuTu: 151815 (v8)
GeekBench: 5096 (v4.4), 1216 (v5.1)
GFXBench: 7fps (ES 3.1 onscreen)
Display 635 nits max brightness (measured)
Loudspeaker -30.9 LUFS (Below average)
Battery (old) Endurance rating 124h

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