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Samsung Galaxy A31 (SM-A315F/DS 128GB) vs Samsung Galaxy A51 (SM-A515F/DSN)

Side by side comparison between Samsung Galaxy A31 vs Samsung Galaxy A51 phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy A51 X Samsung Galaxy A31 (SM-A315F/DS 128GB) 02Points
6.4"
AMOLED

1080x2400

48
MP

20mp

4GB
RAM

Octa-core

5000
mAh

(Non removable)

vs
13Points Samsung Galaxy A51 (SM-A515F/DSN) Compare Samsung Galaxy A31 X
6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

Octa-core

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A51 (SM-A515F/DSN)

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!


36 Common items in both devices
128GB (104GB available) / 128GB (107GB available)
eMMC 5.1
Until 1TB microSD, microSDXC
Plastic body, glass front
Super AMOLED
60Hz
16 million
+29 specs and more in the table below

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

Highlight differences Clear highlight

📱 Model features

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
ModelGalaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Other model namesGalaxy A31 SM-A315F/Dual-Sim NFC (128GB + 4GB RAM)Samsung Galaxy A51 SM-A515F/DSN
Country or region available(Global, International)
(Global, International)
(Europe)(Global, International)United Arab EmiratesPakistanTaiwan
(Europe), (Global, International), United Arab Emirates, Pakistan, Taiwan
BrandSamsungSamsung
Release date4/27/2020, Announced: 3/24/202012/16/2019, Announced: 12/12/2019
Depth8.6 millimeters (0.34 inches)7.9 millimeters (0.31 inches)
Size (width x height)73.1 x 159.3 millimeters (2.88 x 6.27 in)73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight185 grams (6.48 ounces)172 grams (6.02 ounces)
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedNot supported

📲 Display

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Display typeSuper AMOLEDSuper AMOLED
Screen size6.4" inches6.5" inches
Screen-to-body ratio~84.9% (screen-to-body ratio)~87.4% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)411 PPI405 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedGorilla Glass 3
Refresh rate60Hz60Hz
Display featuresNot supportedAlways-On Display

🤖 Operating System

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
System versionAndroid 10Android 10
Firmware updateAndroid 11Android 13
User InterfaceOne UI 2.5 / 3.1One UI 2.5 / 3.1 / 4.1 / 5.0

⚙️ Processor

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Chipset64bit: MediaTek Helio P65 (MT6768) (12nm)64bit: Samsung Exynos 9611 (10nm)
CPUOcta-core, 2 processors:
2x 2GHz ARM Cortex-A75 (Dual-core)
6x 1.7GHz ARM Cortex-A55 (Hexa-core)
Octa-core, 2 processors:
4x 2.3GHz ARM Cortex-A73 (Quad-core)
4x 1.7GHz ARM Cortex-A53 (Quad-core)
GPU graphical controllerARM Mali-G52 MC2 (820MHz)ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)AnTuTu: 151815 (v8)
Geekbench: 5096 (v4.4), 1216 (v5.1)
GFXBench: 7fps (ES 3.1 onscreen)
feature not registered

💽 Memory and storage

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
RAM memory4GB LPDDR4X6GB LPDDR4X
Internal storage128GB (104GB available)
eMMC 5.1
128GB (107GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(dedicated slot)

📶 Mobile networks

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
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 / Upload150/50 Mbps600/150 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bands Expand band details Collapse 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 850/900/1900/2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat4 (1, 2, 3, 5, 7, 8, 20)
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, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkUMTS 850/900/1900/2100Not supported
Secondary 4G networkLTE Cat4 (1, 2, 3, 5, 7, 8, 20)
TD-LTE (38, 40, 41)
VoLTE
Not supported
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE

📷 Camera

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Back camera (main camera)(quad camera)
48 megapixels
8MP ultrawide f/2.2123°1/4"1.12µm
5MP macro f/2.4
5MP depth f/2.4
(quad camera)
48 megapixels
12MP ultrawide f/2.213mm1.12µm
5MP telephoto f/2.440mm
5MP depth f/2.21/5.0"1.12µm
Main camera resolution8000x6000 pixels8000x6000 pixels
Video recording (primary)Full HD (1920x1080) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/2.0 (aperture)f/2.0 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2" 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
Camera extrasfeature not registeredfeature not registered

📸 Front camera

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Front camera (secondary)20 megapixels32 megapixels
Front camera resolution5184x3840 pixels6528x4896 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.2 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2.8" inches
Pixel sizefeature not registered0.8µm pixel

🔉 Sound and multimedia

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
LoudspeakerMono sound (not stereo)Supported
Active noise cancellation2 microphones or more2 microphones or more
RadioFMFM (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

🔌 Connectivity

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
Audio output3.5mm jack3.5mm jack
TV outputUSB Type-C (reversible)Not supported
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedSupported
Infrared portNot supportedNot supported

🧭 Sensors

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
SensorsAccelerometer
Ambient light sensor
Compass
Face unlock
Fingerprint sensor (under display)
Gyroscope
Virtual proximity sensor
Accelerometer
Ambient light sensor
ANT+
Compass
Face unlock
Fingerprint sensor (under display)
Gyroscope
Hall effect
Virtual proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Battery typeLiPo: li-ion polymer (Non removable)LiPo: li-ion polymer (Non removable)
Battery capacity5000 mAh4000 mAh
Charger, watts15W Wired fast charging15W Wired fast charging
Inductive / wireless chargingNot supportedNot supported
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered

➕ Other features

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous• Colors: Prism Black, Prism Blue, Prism Red, Prism White• Colors: Prism, Crush Black, White, Blue, Pink

☢️ Radiation rate

Galaxy A31 (SM-A315F/DS 128GB)Galaxy A51 (SM-A515F/DSN)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)0.488W/kg (head), 1.68W/kg (body)0.369W/kg (head), 1.59W/kg (body)
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