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Samsung Galaxy A31 (SM-A315F/DS 128GB) vs Samsung Galaxy A21 (SM-A215U1)

Side by side comparison between Samsung Galaxy A31 vs Samsung Galaxy A21 phones, differences, pros, cons with full specifications. What's the better?

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Compare Samsung Galaxy A21 XSamsung Galaxy A31 (SM-A315F/DS 128GB)11Points
Samsung Galaxy A31 (SM-A315F/DS 128GB)
6.4"
AMOLED

1080x2400

48
MP

20mp

4GB
RAM

64bit Octa

5000
mAh

(Non removable)

vs
05PointsSamsung Galaxy A21 (SM-A215U1)Compare Samsung Galaxy A31 X
Samsung Galaxy A21 (SM-A215U1)
6.5"
PLS

720x1600

16
MP

13mp

3GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A31 (SM-A315F/DS 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!

Galaxy A31 (SM-A315F/DS 128GB)11 Advantages Samsung Galaxy A31 (SM-A315F/DS 128GB)vsGalaxy A21 (SM-A215U1)5 Advantages Samsung Galaxy A21 (SM-A215U1)
+4GB LPDDR4X33%
More RAM memory. Typically more responsive and better for multitasking.
vs3GB LPDDR3
+128GB (104GB available)4 times
More internal storage for applications and files
vs32GB (20GB available)
+185 grams (6.48 ounces)4%
Lighter
vs193 grams (6.76 ounces)
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT PLS
+1080x2400 pixels125%
Higher resolution screen
vs720x1600 pixels
+411 PPI52%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs270 PPI
+(quad camera) 48MP + 8MP + 5MP + 5MP136%
Higher resolution main camera
vs(quad camera) 16MP + 8MP + 2MP + 2MP
+1/2" inches53%
The larger sensor camera lets you take photos with better depth.
vs1/3.06" inches
+(front) 20MP56%
Higher resolution secondary camera to take pictures and selfies
vs(front) 13MP
+5000 mAh25%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs4000 mAh
+2 slots (Dual-SIM)
(dedicated slot)Advantage
It's more advantageous to have more than one phone operator in the same device
vs1 slot (Single-SIM)
(dedicated slot)
2Ghz 64bit Octa-Corevs+2.3Ghz 64bit Octa-Core16%
More powerful processor, you can open your applications faster
8.6 millimeters (0.34 inches)vs+8.1 millimeters (0.32 inches)6%
Thinner
6.4"vs+6.5"2%
Larger screen
f/2.0 (aperture)vs+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Not supportedvs+Proximity sensorAdvantage
Sensors help you use the device

37 Common items in both devices
eMMC 5.1
Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC
Plastic body, glass front
60Hz
16 million
LED flash
Only digital zoom
+30 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 A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
ModelGalaxy A31 (SM-A315F/DS 128GB)Galaxy A21 (SM-A215U1)
Other model namesGalaxy A31 SM-A315F/Dual-Sim NFC (128GB + 4GB RAM)Galaxy A21 SM-A215UZKAXAA (USA Unlocked)
Country or region available(Global, International)
(Global, International)
USA
USA
BrandSamsungSamsung
Release dateApril, 2020June, 2020
Depth8.6 millimeters (0.34 inches)8.1 millimeters (0.32 inches)
Size (width x height)73.1 x 159.3 millimeters (2.88 x 6.27 in)76.7 x 167.8 millimeters (3.02 x 6.61 in)
Weight185 grams (6.48 ounces)193 grams (6.76 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 A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
Operating systemAndroid 10Android 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
Chipset64bit - MediaTek MT6768 Helio P65 (12nm)64bit - MediaTek MT6765 Helio P35 (12nm)
CPU processorOcta-Core, 2 processors:
2Ghz Dual-Core ARM Cortex-A75
1.7Ghz Hexa-Core ARM Cortex-A55
Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A53
1.8Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerARM Mali-G52 MC2 820MhzPowerVR GE8320 680Mhz
RAM memory4GB LPDDR4X3GB LPDDR3
Internal storage128GB (104GB available)
eMMC 5.1
32GB (20GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
Display typeSuper AMOLEDTFT PLS
Screen size6.4" inches6.5" inches
Screen-to-body ratio~84.9% (screen-to-body ratio)~79.3% (screen-to-body ratio)
Display resolution1080x2400 pixels (20:9)720x1600 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)411 PPI270 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Display features60Hz60Hz
Mobile networksSamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)
Not supported
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
1 slot (Single-SIM)
nano-SIM (4FF)
Maximum download/upload150/50 Mbps150/50 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 850/900/1900/2100CDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat4 (Bands 1, 2, 3, 5, 7, 8, 20)
TD-LTE (Bands 38, 40, 41)
LTE Cat4 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71)
TD-LTE (38, 39, 40, 41)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
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 A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
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, Voice commands
CameraSamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
Back camera (main camera)(quad camera)
48 megapixels
8MP ultrawidef/2.213mm1/4.0"1.12µm
5MP macrof/2.4
5MP depthf/2.4
(quad camera)
16 megapixels
8MP ultrawidef/2.21/4.0"1.12µm
2MP macrof/2.4
2MP depthf/2.4
Main camera resolution8000x6000 pixels4608x3456 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/2.0 (aperture)f/1.8 (aperture)
Focal length26mm lensfeature not registered
Sensor size1/2" inches1/3.06" inches
Pixel size0.8µm pixel1µm 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 A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
Front camera (secondary)20 megapixels13 megapixels
Front camera resolution5184x3840 pixels4128x3096 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)f/2.0 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registered1.12µm pixel
MultimediaSamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
RadioFMFM
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 A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
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
NFCSupportedSupported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDouA-GPS, GeoTagging, GLONASS
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
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 (under display)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Prism Black, Prism Blue, Prism Red, Prism White
- One UI 2.0
- WiFi direct, hotspot
- Colors: Black
- One UI 2.0
- WiFi direct, hotspot
Power supplySamsung Galaxy A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
BatteryLiPo: Li-Ion polymer (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity5000 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 A31 (SM-A315F/DS 128GB)Samsung Galaxy A21 (SM-A215U1)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registered0.6W/kg (head) | 1.27W/kg (body)
SAR 2W/kg (Europe, UK, etc.)0.488W/kg (head) | 1.68W/kg (body)feature not registered
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