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Samsung Galaxy A21 (SM-A215W) vs Samsung Galaxy A51 (SM-A515F/DS)

Side by side comparison between Samsung Galaxy A21 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 A21 (SM-A215W)02Points
Samsung Galaxy A21 (SM-A215W)
6.5"
PLS

720x1600

16
MP

13mp

3GB
RAM

64bit Octa

4000
mAh

(Non removable)

vs
18PointsSamsung Galaxy A51 (SM-A515F/DS)Compare Samsung Galaxy A21 X
Samsung Galaxy A51 (SM-A515F/DS)
6.5"
AMOLED

1080x2400

48
MP

32mp

4GB
RAM

64bit Octa

4000
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 A21 (SM-A215W)2 Advantages Samsung Galaxy A21 (SM-A215W)vsGalaxy A51 (SM-A515F/DS)18 Advantages Samsung Galaxy A51 (SM-A515F/DS)
+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
2.3Ghz 64bit Octa-Corevs+2.3Ghz 64bit Octa-Core13%
More powerful processor, you can open your applications faster
3GB LPDDR3vs+4GB LPDDR4X33%
More RAM memory. Typically more responsive and better for multitasking.
32GB (20GB available)vs+128GB (107GB available)4 times
More internal storage for applications and files
Until 512GB microSD, microSDXCvs+Until 1TB microSD, microSDXC100%
More external storage for files using memory cards
193 grams (6.76 ounces)vs+172 grams (6.02 ounces)12%
Lighter
8.1 millimeters (0.32 inches)vs+7.9 millimeters (0.31 inches)3%
Thinner
TFT PLSvs+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
720x1600 pixelsvs+1080x2400 pixels125%
Higher resolution screen
270 PPIvs+405 PPI50%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
(quad camera) 16MP + 8MP + 2MP + 2MPvs+(quad camera) 48MP + 12MP + 5MP + 5MP151%
Higher resolution main camera
1/3.06" inchesvs+1/2" inches53%
The larger sensor camera lets you take photos with better depth.
(front) 13MPvs+(front) 32MP150%
Higher resolution secondary camera to take pictures and selfies
Full HD (1920x1080)vs+4K UHD (3840x2160)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) 150 Mbpsvs+(4G+ LTE-A) 600 Mbps3 times
Faster for surfing the internet and download files
Not supportedvs+ANT+Advantage
Sensors help you use the device
1 slot (Single-SIM)
(dedicated slot)
vs+2 slots (Dual-SIM)
(dedicated slot)Advantage
It's more advantageous to have more than one phone operator in the same device
Not supportedvs+Gorilla Glass 3Advantage
Protection against scratches on the screen lets you carry your phone with your keys

35 Common items in both devices
eMMC 5.1
Plastic body, glass front
60Hz
16 million
6.5"
LED flash
Only digital zoom
+28 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 A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
ModelGalaxy A21 (SM-A215W)Galaxy A51 (SM-A515F/DS)
Other model namesGalaxy A21 SM-A215WZKAXAC (Bell Mobility)Samsung Galaxy A51 SM-A515F/DS
Country or region availableCanada
Canada
(Latin America)
(Latin America)
BrandSamsungSamsung
Release dateJune, 2020December, 2019
Depth8.1 millimeters (0.32 inches)7.9 millimeters (0.31 inches)
Size (width x height)76.7 x 167.8 millimeters (3.02 x 6.61 in)73.6 x 158.5 millimeters (2.9 x 6.24 in)
Weight193 grams (6.76 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 A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Operating systemAndroid 10Android 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Chipset64bit - MediaTek MT6765 Helio P35 (12nm)64bit - Samsung Exynos 9 Octa 9611 (10nm)
CPU processorOcta-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A53
1.8Ghz 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 controllerPowerVR GE8320 680MhzARM Mali-G72 MP3
RAM memory3GB LPDDR34GB LPDDR4X
Internal storage32GB (20GB available)
eMMC 5.1
128GB (107GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Display typeTFT PLSSuper AMOLED
Screen size6.5" inches6.5" inches
Screen-to-body ratio~79.3% (screen-to-body ratio)~87.4% (screen-to-body ratio)
Display resolution720x1600 pixels (20:9)1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)270 PPI405 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedGorilla Glass 3
Display features60Hz60Hz
Mobile networksSamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card1 slot (Single-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, 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 Cat4 (1, 2, 3, 4, 5, 7, 12, 13, 17, 20, 66, 71)
TD-LTE (38, 40, 41)
VoLTE
LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedGPRS, EDGE
CallingSamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
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 A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Back camera (main camera)(quad camera)
16 megapixels
8MP ultrawidef/2.21/4.0"1.12µm
2MP macrof/2.4
2MP depthf/2.4
(quad camera)
48 megapixels
12MP ultrawidef/2.213mm1.12µm
5MP telephotof/2.440mm
5MP depthf/2.21/5.0"1.12µm
Main camera resolution4608x3456 pixels8000x6000 pixels
Video recording (primary)Full HD (1920x1080) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.0 (aperture)
Focal lengthfeature not registered26mm lens
Sensor size1/3.06" inches1/2" inches
Pixel size1µm 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 A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Front camera (secondary)13 megapixels32 megapixels
Front camera resolution4128x3096 pixels6528x4896 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2.8" inches
Pixel size1.12µm pixel0.8µm pixel
MultimediaSamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
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
ConnectivitySamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
USBUSB 2.0 Type-C reversible connectorUSB 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, GLONASSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
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: Black
- One UI 2.0
- WiFi direct, hotspot
- Colors: Prism, Crush Black, White, Blue, Pink
- One UI 2
- Always On Display
- WiFi direct, hotspot
Power supplySamsung Galaxy A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity4000 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 A21 (SM-A215W)Samsung Galaxy A51 (SM-A515F/DS)
SAR 1.6W/kg (USA, Mexico, etc.)0.6W/kg (head) | 1.27W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registered0.369W/kg (head) | 1.59W/kg (body)
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