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Samsung Galaxy A51 (SM-A515F/DS) vs Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)

Side by side comparison between Samsung Galaxy A51 vs Samsung Galaxy A21s phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy A21s XSamsung Galaxy A51 (SM-A515F/DS)14Points
Samsung Galaxy A51 (SM-A515F/DS)
6.5"
AMOLED

1080x2400

48
MP

32mp

4GB
RAM

64bit Octa

4000
mAh

(Non removable)

vs
03PointsSamsung Galaxy A21s (SM-A217F/DS 64GB/4GB)Compare Samsung Galaxy A51 X
Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
6.5"
PLS

720x1600

48
MP

13mp

4GB
RAM

64bit Octa

5000
mAh

(Non removable)

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

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!

Galaxy A51 (SM-A515F/DS)14 Advantages Samsung Galaxy A51 (SM-A515F/DS)vsGalaxy A21s (SM-A217F/DS 64GB/4GB)3 Advantages Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
+128GB (107GB available)123%
More internal storage for applications and files
vs64GB (48GB available)
+Until 1TB microSD, microSDXC100%
More external storage for files using memory cards
vsUntil 512GB microSD, microSDXC
+172 grams (6.02 ounces)12%
Lighter
vs192 grams (6.72 ounces)
+7.9 millimeters (0.31 inches)13%
Thinner
vs8.9 millimeters (0.35 inches)
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT PLS
+1080x2400 pixels125%
Higher resolution screen
vs720x1600 pixels
+405 PPI50%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs270 PPI
+(quad camera) 48MP + 12MP + 5MP + 5MP17%
Higher resolution main camera
vs(quad camera) 48MP + 8MP + 2MP + 2MP
+(front) 32MP150%
Higher resolution secondary camera to take pictures and selfies
vs(front) 13MP
+4K UHD (3840x2160)3 times
More image quality for recording videos with the primary camera
vsFull HD (1920x1080)
+(4G+ LTE-A) 600 Mbps100%
Faster for surfing the internet and download files
vs(4G+ LTE-A) 300 Mbps
+Ambient Light sensorAdvantage
Sensors help you use the device
vsNot supported
+ANT+Advantage
Sensors help you use the device
vsNot supported
+Gorilla Glass 3Advantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
2.3Ghz 64bit Octa-Corevs+2Ghz 64bit Octa-Core10%
More powerful processor, you can open your applications faster
4000 mAhvs+5000 mAh25%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supportedvs+FMAdvantage
The radio lets you listen to your songs and sports in general

38 Common items in both devices
4GB LPDDR4X
eMMC 5.1
Plastic body, glass front
Not supported
60Hz
16 million
6.5"
+31 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/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
ModelGalaxy A51 (SM-A515F/DS)Galaxy A21s (SM-A217F/DS 64GB/4GB)
Other model namesSamsung Galaxy A51 SM-A515F/DSGalaxy A21s SM-A217F/Dual-Sim (64GB + 4GB RAM)
Country or region available(Latin America)
(Latin America)
(Global, International)AngolaSaudi ArabiaEgyptIndiaMoroccoMozambiquePakistan
(Global, International), Angola, Saudi Arabia, Egypt, India, Morocco, Mozambique, Pakistan
BrandSamsungSamsung
Release dateDecember, 2019June, 2020
Depth7.9 millimeters (0.31 inches)8.9 millimeters (0.35 inches)
Size (width x height)73.6 x 158.5 millimeters (2.9 x 6.24 in)75.3 x 163.7 millimeters (2.96 x 6.44 in)
Weight172 grams (6.02 ounces)192 grams (6.72 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 A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Operating systemAndroid 10Android 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Chipset64bit - Samsung Exynos 9 Octa 9611 (10nm)64bit - Samsung Exynos 850 Octa (8nm)
CPU processorOcta-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A73
1.7Ghz Quad-Core ARM Cortex-A53
Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A55
2Ghz Quad-Core ARM Cortex-A55
GPU graphical controllerARM Mali-G72 MP3ARM Mali-G52 MP1
RAM memory4GB LPDDR4X4GB LPDDR4X
Internal storage128GB (107GB available)
eMMC 5.1
64GB (48GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Display typeSuper AMOLEDTFT PLS
Screen size6.5" inches6.5" inches
Screen-to-body ratio~87.4% (screen-to-body ratio)~82.8% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)720x1600 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)405 PPI270 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Not supported
Display features60Hz60Hz
Mobile networksSamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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 Mbps300/150 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 850/900/1900/2100
Primary 4G networkLTE Cat12/13 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
VoLTE
LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, 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 A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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)
(quad camera)
• 48 megapixels
• 8MP ultrawide (f/2.2 1/4" 1.12µm 123º)
• 2MP macro (f/2.4)
• 2MP depth sensor (f/2.4)
Main camera resolution8000x6000 pixels8000x6000 pixels
Video recording (primary)4K UHD (3840x2160) 30 fpsFull HD (1920x1080) 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
2ª cameraSamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Front camera (secondary)32 megapixels13 megapixels
Front camera resolution6528x4896 pixels4128x3096 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.2 (aperture)
Focal length26mm lensfeature not registered
Sensor size1/2.8" inches1/3.1" inches
Pixel size0.8µm pixel1.12µm pixel
MultimediaSamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
USBUSB 2.0 Type-C, USB OTG On-The-GoUSB 2.0 Type-C reversible connector
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
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
Java / Flash playerNot supportedNot supported
SensorsAccelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Hall effect
Face unlock
Fingerprint sensor (under display)
ANT+
Accelerometer
Proximity sensor
Compass
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Prism, Crush Black, White, Blue, Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
- Colors: Black, White, Blue, Red
- One UI 2.0
- WiFi direct, hotspot
Power supplySamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity4000 mAh5000 mAh
Charger, watts• 15W Fast battery charging• 15W (9V/1.67A) Fast battery charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy A51 (SM-A515F/DS)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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)0.422W/kg (head) | 1.544W/kg (body)
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