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Samsung Galaxy J3 2018 (SM-J337U) vs Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)

Side by side comparison between Samsung Galaxy J3 (2018) 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 J3 2018 (SM-J337U)05Points
Samsung Galaxy J3 2018 (SM-J337U)
5"
IPS

720x1280

8
MP

5mp

2GB
RAM

64bit Quad

2600
mAh

(Removable)

vs
20PointsSamsung Galaxy A21s (SM-A217F/DS 64GB/4GB)Compare Samsung Galaxy J3 (2018) 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 A21s (SM-A217F/DS 64GB/4GB)

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 J3 2018 (SM-J337U)5 Advantages Samsung Galaxy J3 2018 (SM-J337U)vsGalaxy A21s (SM-A217F/DS 64GB/4GB)20 Advantages Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
+152 grams (5.32 ounces)26%
Lighter
vs192 grams (6.72 ounces)
+TFT IPS LCDAdvantage
TFT IPS LCD display is brighter and more vivid
vsTFT PLS
+294 PPI9%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs270 PPI
+f/1.9 (aperture)5%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+Li-Ion: Lithium-Ion (Removable)Advantage
Removable battery can be replaced easily
vsLiPo: Li-Ion polymer (Non removable)
1.4Ghz 64bit Quad-Corevs+2Ghz 64bit Octa-Core104%
More powerful processor, you can open your applications faster
2GB LPDDR3vs+4GB LPDDR4X100%
More RAM memory. Typically more responsive and better for multitasking.
16GB (9GB available)vs+64GB (48GB available)4 times
More internal storage for applications and files
eMMC 5.0vs+eMMC 5.1Advantage
Fastest write and read storage.
9 millimeters (0.35 inches)vs+8.9 millimeters (0.35 inches)1%
Thinner
720x1280 pixelsvs+720x1600 pixels25%
Higher resolution screen
5"vs+6.5"30%
Larger screen
(back) 8MPvs+(quad camera) 48MP + 8MP + 2MP + 2MP7 times
Higher resolution main camera
HDR photo only main cameravs+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
(front) 5MPvs+(front) 13MP160%
Higher resolution secondary camera to take pictures and selfies
Android 8.0 Oreovs+Android 10Advantage
Android 10 is newer and safer
(4G LTE) 150 Mbpsvs+(4G+ LTE-A) 300 Mbps100%
Faster for surfing the internet and download files
Not supportedvs+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
Not supportedvs+Face unlockAdvantage
Sensors help you use the device
2600 mAhvs+5000 mAh92%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
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+Active noise cancellationAdvantage
Noise-canceling microphone allows better call quality
802.11 b/g/n (2.4Ghz)vs+802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMOAdvantage
WiFi 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO is newer and faster
4.2 + A2DPvs+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
MicroUSB 2.0vs+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.

24 Common items in both devices
Until 512GB microSD, microSDXC
Plastic body, glass front
16 million
LED flash
Only digital zoom
Autofocus / PDAF: phase detection autofocus
EIS: Digital stabilization
+17 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 J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
ModelGalaxy J3 2018 (SM-J337U)Galaxy A21s (SM-A217F/DS 64GB/4GB)
Other model namesGalaxy J3 (2018) Unlocked SM-J337UZKAXAAGalaxy A21s SM-A217F/Dual-Sim (64GB + 4GB RAM)
Country or region availableUSA
USA
(Global, International)AngolaSaudi ArabiaEgyptIndiaMoroccoMozambiquePakistan
(Global, International), Angola, Saudi Arabia, Egypt, India, Morocco, Mozambique, Pakistan
BrandSamsungSamsung
Release dateMay, 2018June, 2020
Depth9 millimeters (0.35 inches)8.9 millimeters (0.35 inches)
Size (width x height)70.2 x 142.8 millimeters (2.76 x 5.62 in)75.3 x 163.7 millimeters (2.96 x 6.44 in)
Weight152 grams (5.32 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 J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Operating systemAndroid 8.0 OreoAndroid 10
Firmware updatefeature not registeredfeature not registered
HardwareSamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Chipset64bit - Samsung Exynos 7 Quad 7570 (14nm)64bit - Samsung Exynos 850 Octa (8nm)
CPU processor1.4Ghz Quad-Core ARM Cortex-A53Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A55
2Ghz Quad-Core ARM Cortex-A55
GPU graphical controllerARM Mali-T720 MP2ARM Mali-G52 MP1
RAM memory2GB LPDDR34GB LPDDR4X
Internal storage16GB (9GB available)
eMMC 5.0
64GB (48GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Display typeTFT IPS LCDTFT PLS
Screen size5" inches6.5" inches
Screen-to-body ratio~68.8% (screen-to-body ratio)~82.8% (screen-to-body ratio)
Display resolution720x1280 pixels720x1600 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)294 PPI270 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Display featuresfeature not registered60Hz
Mobile networksSamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
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 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 Cat4 (Bands 2, 3, 4, 5, 7, 12, 14)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+, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, 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 J3 2018 (SM-J337U)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 J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Back camera (main camera)8 megapixels(quad camera)
48 megapixels
8MP ultrawidef/2.21/4"1.12µm123º
2MP macrof/2.4
2MP depthf/2.4
Main camera resolution3264x2448 pixels8000x6000 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.9 (aperture)f/2.0 (aperture)
Focal lengthfeature not registered26mm lens
Sensor sizefeature not registered1/2" inches
Pixel sizefeature not registered0.8µm pixel
AutofocusAutofocusPDAF: 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 only main cameraHDR photo on both cameras
2ª cameraSamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Front camera (secondary)5 megapixels13 megapixels
Front camera resolution2560x1920 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 lengthfeature not registeredfeature not registered
Sensor sizefeature not registered1/3.1" inches
Pixel sizefeature not registered1.12µm pixel
MultimediaSamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
RadioFMFM
TVNot supportedNot supported
Video formatsMP4, 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 J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
USBMicroUSB 2.0USB 2.0 Type-C reversible connector
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth4.2 + A2DP5.0 + A2DP/LE
WiFi802.11 b/g/n (2.4Ghz)802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNANot supportedNot supported
NFCNot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
Active noise cancellationNot supportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Compass
Gyroscope
Accelerometer
Proximity sensor
Compass
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Black
- WiFi direct, hotspot
- Colors: Black, White, Blue, Red
- One UI 2.0
- WiFi direct, hotspot
Power supplySamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
BatteryLi-Ion: Lithium-Ion (Removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity2600 mAh5000 mAh
Charger, watts Standard charging15W (9V/1.67A) Fast battery charging
Talk time autonomyfeature not registeredfeature not registered
Standbyfeature not registeredfeature not registered
Radiation rateSamsung Galaxy J3 2018 (SM-J337U)Samsung Galaxy A21s (SM-A217F/DS 64GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)1.2W/kg (head) | 1.58W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registered0.422W/kg (head) | 1.544W/kg (body)
X

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