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Samsung Galaxy A51 (SM-A515F/DSM 128GB) vs Samsung Galaxy S20

Side by side comparison, pros, cons, differences between Samsung Galaxy A51 vs Samsung Galaxy S20 phones with full specifications. What's the best?

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Compare Samsung Galaxy S20 XSamsung Galaxy A51 (SM-A515F/DSM 128GB)05Points
Samsung Galaxy A51 (SM-A515F/DSM 128GB)
6.5"
AMOLED

1080x2400

48
MP

32mp

6GB
RAM

64bit Octa

4000
mAh

(Non removable)

vs
Samsung Galaxy S20
6.2"
AMOLED

1440x3200

12.2
MP

10mp

8GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy S20

The phonemore's choice is much more technical than personal, so don't just evaluate it. Our goal is to help, but what's important to us may not be important to you. You decide which is the best! Comment!

Galaxy A51 (SM-A515F/DSM 128GB)5 Advantages Samsung Galaxy A51 (SM-A515F/DSM 128GB)vsGalaxy S2026 Advantages Samsung Galaxy S20
+6.5"5%
Larger screen
vs6.2"
+1/2" inches28%
The larger sensor camera lets you take photos with better depth
vs1/2.55" inches
+(front) 32MP2 times
Higher resolution secondary camera to take pictures and selfies
vs(front) 10MP
+3.5mm jackAdvantage
Headsets with 3.5mm Jack size are more common and easy to find in stores
vsType-C reversible connector
+2 slots Dual-SIMAdvantage
It's more advantageous to have more than one phone operator in the same device
vs1 slot
2.3Ghz 64bit Octa-Corevs+2.84Ghz 64bit Octa-Core25%
More powerful processor, you can open your applications faster
6GB LPDDR4Xvs+8GB LPDDR533%
More RAM memory. Typically more responsive and better for multitasking
eMMC 5.1vs+UFS 3.0Advantage
Fastest write and read storage
172 grams (6.02 ounces)vs+164 grams (5.74 ounces)5%
Lighter
Plastic body, glass frontvs+Aluminum frame, glass front/backAdvantage
More resistant material
1080x2400 pixelsvs+1440x3200 pixels78%
Higher resolution screen
405 PPIvs+566 PPI40%
Crisper display of text, images and video because it has more pixels per inch (ppi)
(quad camera) 48MP + 12MP + 5MP + 5MPvs+(triple camera) 12.2MP + 64MP + 12MP26%
Higher resolution main camera
Only digital zoomvs+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
PDAF: phase detection autofocusvs+PDAF: phase detection autofocus on both camerasAdvantage
You with less worry when taking pictures with auto focus
EIS: Digital stabilizationvs+OIS: Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
Not supportedvs+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
f/2.0 (aperture)vs+f/1.5 (aperture)33%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure
4K UHD (3840x2160)vs+8K UHD (7680x4320)3 times
More image quality for recording videos with the primary camera
(front) Full HD (1920x1080)vs+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
(4G+ LTE-A) 600 Mbpsvs+(4G+ LTE-A) 2000 Mbps2 times
Faster for surfing the internet and download files
Not supportedvs+BarometerAdvantage
Sensors help you use the device
Not supportedvs+Heart rateAdvantage
Sensors help you use the device
Not supportedvs+SpO2Advantage
Sensors help you use the device
Not supportedvs+FMAdvantage
The radio lets you listen to your songs and sports in general
802.11 a/b/g/n/ac + MIMO (2.4Ghz, 5Ghz)vs+802.11 a/b/g/n/ac/ax + MIMO (2.4Ghz, 5Ghz)Advantage
WiFi 802.11 a/b/g/n/ac/ax + MIMO (2.4Ghz, 5Ghz) is newer and faster
Not supportedvs+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device
5.0 version A2DP/LEvs+5.1 version A2DP/LEAdvantage
Bluetooth 5.1 version A2DP/LE is newer and faster
Not supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
USB 2.0 Type-C, USB OTG On-The-Govs+USB 3.2 Type-C, USB OTG On-The-GoAdvantage
More speed data transfer as mp3 and photos via USB
Not supportedvs+IP68 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

28 Common items in both devices
128GB (107GB user free)
Until 1TB microSD, microSDXC
7.9 millimeters (0.31 inches)
Super AMOLED / Dynamic AMOLED
16 million
LED flash
HDR photo on both cameras / HDR photo/video on both cameras
+21 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 A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
ModelGalaxy A51 (SM-A515F/DSM 128GB)Galaxy S20
Other model namesSamsung Galaxy A51 SM-A515F/DSMSamsung Galaxy S20 5G
Country or region availableKazakhstanRussia
Kazakhstan, Russia
(Global, International)
(Global, International)
BrandSamsungSamsung
Release dateDecember, 2019March, 2020
Depth7.9 millimeters (0.31 inches)7.9 millimeters (0.31 inches)
Size (width x height)73.6 x 158.5 millimeters (2.9 x 6.24 in)68 x 152 millimeters (2.68 x 5.98 in)
Weight172 grams (6.02 ounces)164 grams (5.74 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontAluminum frame, glass front/back
Protection against water and othersNot supportedIP68 certified: dust proof and waterproof over 1.5 meter and 30min
System (OS)Samsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Operating systemAndroid 10Android 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Chipset64bit - Samsung Exynos 9 Octa 9611 (10nm)64bit - Qualcomm Snapdragon 865 SM8250 (7nm)
CPU processorOcta-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
Octa-Core, 3 processors:
2.84Ghz Single-Core Kryo 585
2.42Ghz 3-Cores Kryo 585
1.9Ghz Quad-Core Kryo 585
GPU graphical controllerARM Mali-G72 MP3Qualcomm Adreno 650
RAM memory6GB LPDDR4X8GB LPDDR5
Internal storage128GB (107GB user free)
eMMC 5.1
128GB (107GB user free)
UFS 3.0
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Display typeSuper AMOLEDDynamic AMOLED
Screen size6.5" inches6.2" inches
Screen-to-body ratio~87.4% (screen-to-body ratio)~89.8% (screen-to-body ratio)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Display resolution1080x2400 pixels1440x3200 pixels
Pixel density (dot pitch)405 PPI566 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Gorilla Glass 6
Mobile networksSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Dual-SIMDual SIM Standby - Call active on one sim card
(dedicated slot)
Not supported
SIM card2 slots Dual-SIM
nano-SIM (4FF)
1 slot
nano-SIM (4FF)
Maximum download/upload600/150 Mbps2000/150 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 850/900/1800/1900CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100CDMA2000 1xEV-DO
TD-SCDMA 1900/2000
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat12/13 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (Bands 38, 40, 41)
VoLTE
LTE Cat20 (Bands )
TD-LTE (Bands )
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900Not supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGENot supported
CallingSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
CameraSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Back camera (main camera)(quad camera)
48 megapixels
12MP ultrawide (f/2.2 13mm 1.12µm)
5MP telephoto (f/2.4 40mm)
5MP depth sensor (f/2.2 1/5.0" 1.12µm)
(triple camera)
12.2 megapixels
64MP telephoto (PDAF, OIS, 3x opt-zoom)
12MP ultrawide (AF Super Steady video)
Main camera resolution8000x6000 pixels4032x3024 pixels
Video recording (primary)4K UHD (3840x2160) 30 fps8K UHD (7680x4320) 24 fps
FlashLED flashLED flash
Focal aperturef/2.0 (aperture)f/1.5 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2" inches1/2.55" inches
Pixel size0.8µm pixel1.4µm pixel
AutofocusPDAF: phase detection autofocusPDAF: phase detection autofocus on both cameras
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationOIS: Optical stabilization
ZoomOnly digital zoomDigital and optical zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedSupported
HDRHDR photo on both camerasHDR photo/video on both cameras
2ª cameraSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Front camera (secondary)32 megapixels10 megapixels
Front camera resolution6528x4896 pixels3872x2592 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/1.9 (aperture)
Focal length26mm lens26mm lens
Sensor size1/2.8" inches1/3.2" inches
Pixel size0.8µm pixel1.22µm pixel
MultimediaSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
RadioNot supportedFM
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 A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 3.2 Type-C, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jackType-C reversible connector
Bluetooth5.0 version A2DP/LE5.1 version A2DP/LE
WiFi802.11 a/b/g/n/ac + MIMO (2.4Ghz, 5Ghz)802.11 a/b/g/n/ac/ax + MIMO (2.4Ghz, 5Ghz)
DLNANot supportedSupported
NFCNot supportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
Java / Flash playerNot supportedNot supported
SensorsAccelerometer
Proximity
Compass
Ambient Light
Gyroscope
Hall effect
Face unlock
Fingerprint (under display)
ANT+
Accelerometer
Proximity
Compass
Ambient Light
Gyroscope
Barometer
Gesture
Heart rate
SpO2
Hall effect
Face unlock
Fingerprint (under display)
ANT+
Other features- Colors: Prism, Crush Black, White, Blue, Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
- Colors: Black and other colors
- Ultrasonic fingerprint sensor
- One UI 2
- Always-on display
- 20:9 ratio, 120Hz, HDR10+ display
- 32-bit/384kHz audio
- Dolby Atmos/AKG sound
- Bixby
- Samsung DeX
- Samsung Pay (MST, NFC)
- USB Power Delivery 2.0
- Wireless charging: 15W
- WiFi direct, hotspot
Power supplySamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
BatteryLiPo - Li-Ion polymer (Non removable)
Fast battery charging
LiPo - Li-Ion polymer (Non removable)
Fast battery charging
Qi wireless charging
Reverse wireless charging between devices
Battery capacity4000 mAh4000 mAh
Battery model / charger (watts)15W45W
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy A51 (SM-A515F/DSM 128GB)Samsung Galaxy S20
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)0.369W/kg (head) | 1.59W/kg (body)feature not registered