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Samsung Galaxy M31 (SM-M315F/DSN 128GB) vs Samsung Galaxy A51 (SM-A515F/DSM 128GB)

Side by side comparison between Samsung Galaxy M31 vs Samsung Galaxy A51 phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy A51 XSamsung Galaxy M31 (SM-M315F/DSN 128GB)07Points
Samsung Galaxy M31 (SM-M315F/DSN 128GB)
6.4"
AMOLED

1080x2340

64
MP

32mp

6GB
RAM

64bit Octa

6000
mAh

(Non removable)

vs
07PointsSamsung Galaxy A51 (SM-A515F/DSM 128GB)Compare Samsung Galaxy M31 X
Samsung Galaxy A51 (SM-A515F/DSM 128GB)
6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy M31 (SM-M315F/DSN 128GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!


41 Common items in both devices
2.3Ghz 64bit Octa-Core
6GB LPDDR4X
128GB (108GB available) / 128GB (107GB available)
Until 1TB microSD, microSDXC
Plastic body, glass front
Super AMOLED
60Hz
+34 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differencesClear highlight
Physical featuresSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
ModelGalaxy M31 (SM-M315F/DSN 128GB)Galaxy A51 (SM-A515F/DSM 128GB)
Other model namesGalaxy M315F/Dual-Sim NFC (128GB + 6GB RAM)Samsung Galaxy A51 SM-A515F/DSM
Country or region availableSouth AfricaAngolaSaudi ArabiaUnited Arab EmiratesMoroccoMozambiqueRussiaTurkeyUkraine
South Africa, Angola, Saudi Arabia, United Arab Emirates, Morocco, Mozambique, Russia, Turkey, Ukraine
KazakhstanRussia
Kazakhstan, Russia
BrandSamsungSamsung
Release dateMarch, 2020December, 2019
Depth8.9 millimeters (0.35 inches)7.9 millimeters (0.31 inches)
Size (width x height)75.1 x 159.2 millimeters (2.96 x 6.27 in)73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight191 grams (6.69 ounces)172 grams (6.02 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedNot supported
System (OS)Samsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Operating systemAndroid 10Android 10
Firmware updateAndroid 11feature not registered
HardwareSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Chipset64bit - Samsung Exynos 9 Octa 9611 (10nm)64bit - Samsung Exynos 9 Octa 9611 (10nm)
CPU processorOcta-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerARM Mali-G72 MP3ARM Mali-G72 MP3
RAM memory6GB LPDDR4X6GB LPDDR4X
Internal storage128GB (108GB available)
UFS 2.1
128GB (107GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Display typeSuper AMOLEDSuper AMOLED
Screen size6.4" inches6.5" inches
Screen-to-body ratio~84.1% (screen-to-body ratio)~87.4% (screen-to-body ratio)
Display resolution1080x2340 pixels (19.5:9)1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)403 PPI405 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Gorilla Glass 3
Display features60Hz, 420 nits60Hz
Mobile networksSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)
Dual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload600/150 Mbps600/150 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
CameraSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Back camera (main camera)(quad camera)
64 megapixels
8MP ultrawidef/2.212mm1/4.0"1.12µm
5MP macrof/2.425mm1/5.0"1.12µm
5MP depthf/2.2
(quad camera)
48 megapixels
12MP ultrawidef/2.213mm1.12µm
5MP telephotof/2.440mm
5MP depthf/2.21/5.0"1.12µm
Main camera resolution10120x6328 pixels8000x6000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal length26mm lens26mm lens
Sensor size1/1.72" inches1/2" inches
Pixel size0.8µm pixel0.8µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo on both cameras
2ª cameraSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Front camera (secondary)32 megapixels32 megapixels
Front camera resolution6528x4896 pixels6528x4896 pixels
Video recording (secondary)4K UHD (3840x2160)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2.8" inches1/2.8" inches
Pixel size0.8µm pixel0.8µm pixel
MultimediaSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
RadioFM (RDS)FM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivitySamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCSupportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Other features- Colors: Ocean Blue, Space Black, Red
- One UI 2.0, 3.1
- WiFi direct, hotspot
- Colors: Prism, Crush Black, White, Blue, Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
Power supplySamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity6000 mAh4000 mAh
Charger, watts15W Fast battery charging15W Fast battery charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy M31 (SM-M315F/DSN 128GB)Samsung Galaxy A51 (SM-A515F/DSM 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)0.482W/kg (head) | 1.127W/kg (body)0.369W/kg (head) | 1.59W/kg (body)
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