Compare Samsung Galaxy M31s vs Samsung Galaxy A51

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Phones
Samsung Galaxy M31s
Samsung Galaxy A51
Network, supported bands and technologies
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
2G bandsGSM 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 bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 26(850), 28(700), 38(2600), 40(2300), 41(2500), 66(1700/2100)
SpeedHSPA 42.2/5.76 Mbps, LTE-AHSPA, LTE-A
 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Release date
First presented2020, July 302019, December
StatusAvailable. Released 2020, August 06Available. Released 2019, December
Size and Dimensions
Measurements159.3 x 74.4 x 9.3 mm (6.27 x 2.93 x 0.37 in)158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in)
Weight203 g (7.16 oz)172 g (6.07 oz)
SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
DesignbuildGlass front (Gorilla Glass 3), plastic back, plastic frame
Display (type and size)
TypeSuper AMOLED capacitive touchscreen, 16M colorsSuper AMOLED capacitive touchscreen, 16M colors
Size6.5 inches, 102.0 cm2 6.5 inches, 102.0 cm2
Resolution1080 x 2400 pixels, 20:9 ratio 1080 x 2400 pixels, 20:9 ratio
ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 3
System and processor information
OSAndroid 10, One UI 2.0Android 10.0; One UI 2
ChipsetExynos 9611 (10nm)Exynos 9611 (10nm)
Central processing unitOcta-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Graphics processing unitMali-G72 MP3Mali-G72 MP3
Memory bank
Slot for memory cardmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Built-in 128GB 8GB RAM 128GB 6GB RAM64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
 memoryotherUFS 2.1memoryotherUFS 2.0
Camera
Triple64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8?m, PDAF12 MP, f/2.2, 123? (ultrawide)5 MP, f/2.4, (macro)5 MP, f/2.4, (depth)
FeaturesLED flash, panorama, HDRLED flash, panorama, HDR
Video4K@30fps, 1080p@30fps, gyro-EIS2160p@30fps, 1080p@30/120fps; gyro-EIS
Selfie Single32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8?m32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8
Selfie FeaturesHDRHDR
Selfie Video4K@30fps, 1080p@30fps1080p@30fps
Quad48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8
Sound
Main speakerYesYes
3.5mm jackYesYes
Communication
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
GPSYes, with A-GPS, GLONASS, GALILEO, BDSYes, with A-GPS, GLONASS, GALILEO, BDS
NFCYes (market/region dependent)Yes
RadioFM radio, RDS, recordingFM radio
USB2.0, Type-C 1.0 reversible connector, USB On-The-Go2.0, Type-C 1.0 reversible connector, USB On-The-Go
Features
SensorsFingerprint recognition (side-mounted), accelerometer, gyro, proximity sensor, compassFingerprint recognition (under display, optical), accelerometer, gyro, proximity sensor, compass
 ANT+
Battery
TypeLi-Po 6000 mAh, non-removable
ChargingFast charging 25WReverse chargingFast charging 15W
 Built-in Li-Po 4000 mAh battery
Other
ColorsMirage Black, Mirage BluePrism Crush Black, White, Blue, Pink
ModelsmodelsSM-M317F, SM-M317F/DSmodelsSM-A515F, SM-A515F/DSN, SM-A515F/DS, SM-A515F/DST, SM-A515F/DSM, SM-A515F/N
SARsar-us1.38 W/kg (head)    sar-us0.80 W/kg (head)     0.67 W/kg (body)    
Price₹ 19,499€ 315.00 / $ 280.95 / £ 235.70 / ₹ 23,999
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