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Samsung Galaxy J7 Star (SM-J737T) vs Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)

Side by side comparison between Samsung Galaxy J7 Star vs Samsung Galaxy A21s phones, differences, pros, cons and full specifications. What's the better?

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Compare Samsung Galaxy A21s XSamsung Galaxy J7 Star (SM-J737T)07Points
Samsung Galaxy J7 Star (SM-J737T)
5.5"
TFT

720x1280

13
MP

13mp

2GB
RAM

64bit Octa

3300
mAh

(Non removable)

vs
15PointsSamsung Galaxy A21s (SM-A217F/DS 64GB/6GB)Compare Samsung Galaxy J7 Star X
Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
6.5"
PLS

720x1600

48
MP

13mp

6GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)

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 J7 Star (SM-J737T)7 Advantages Samsung Galaxy J7 Star (SM-J737T)vsGalaxy A21s (SM-A217F/DS 64GB/6GB)15 Advantages Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
+181 grams (6.34 ounces)6%
Lighter
vs192 grams (6.72 ounces)
+8.6 millimeters (0.34 inches)3%
Thinner
vs8.9 millimeters (0.35 inches)
+f/1.7 (aperture)18%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.0 (aperture)
+Ambient Light sensorAdvantage
Sensors help you use the device
vsVirtual ambient light sensor
+ANT+Advantage
Sensors help you use the device
vsNot supported
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
+Gorilla Glass 5Advantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
1.6GHz 64bit Octa-Corevs+2GHz 64bit Octa-Core40%
More powerful processor, you can open your applications faster
2GB LPDDR3vs+6GB LPDDR4X2 times
More RAM memory. Typically more responsive and better for multitasking.
16GB (10GB available)vs+64GB (48GB available)4 times
More internal storage for applications and files
TFT LCDvs+TFT PLSAdvantage
TFT PLS display is brighter and more vivid
720x1280 pixelsvs+720x1600 pixels25%
Higher resolution screen
267 PPIvs+270 PPI1%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.5"vs+6.5"18%
Larger screen
(back) 13MPvs+(quad camera) 48MP + 8MP + 2MP + 2MP4 times
Higher resolution main camera
Android 9.0 Pievs+Android 11Advantage
Android 11 is newer and safer
Not supportedvs+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
3300 mAhvs+5000 mAh52%
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+FMAdvantage
The radio lets you listen to your songs and sports in general
4.2 + A2DPvs+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
MicroUSB 2.0, USB OTG On-The-Govs+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.

31 Common items in both devices
eMMC 5.1
Until 512GB microSD, microSDXC
Plastic body, glass front
16 million
LED flash
Only digital zoom
Autofocus / PDAF: phase detection autofocus
+24 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

📱 Model features

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
ModelGalaxy J7 Star (SM-J737T)Galaxy A21s (SM-A217F/DS 64GB/6GB)
Other model namesGalaxy J7 2018 (T-Mobile) SM-J737TZSATMBGalaxy A21s SM-A217F/Dual-Sim (64GB + 6GB RAM)
Country or region availableUSA
USA
PhilippinesIndiaIndonesiaMalaysiaMyanmarThailandVietnam
Philippines, India, Indonesia, Malaysia, Myanmar, Thailand, Vietnam
BrandSamsungSamsung
Release date7/1/20186/2/2020, Announced: 5/15/2020
Depth8.6 millimeters (0.34 inches)8.9 millimeters (0.35 inches)
Size (width x height)76.2 x 153.2 millimeters (3 x 6.03 in)75.3 x 163.7 millimeters (2.96 x 6.44 in)
Weight181 grams (6.34 ounces)192 grams (6.72 ounces)
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedNot supported

🤖 Operating System

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
System versionAndroid 8.0 OreoAndroid 10
Firmware updateAndroid 9.0 PieAndroid 11
User Interfacefeature not registeredOne UI 2.0 / 3.1

⚙️ Processor

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Chipset64bit - Samsung Exynos 7870 (14nm)64bit - Samsung Exynos 850 (8nm)
CPUOcta-Core, 1 processor:
1.6GHz Octa-Core ARM Cortex-A53
Octa-Core, 1 processor:
2GHz Octa-Core ARM Cortex-A55
GPU graphical controllerARM Mali-T830 MP1 (700MHz)ARM Mali-G52 MP1
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
RAM memory2GB LPDDR36GB LPDDR4X
Internal storage16GB (10GB available)
eMMC 5.1
64GB (48GB available)
eMMC 5.1
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 512GB microSD, microSDXC
(dedicated slot)

📲 Display

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Display typeTFT LCDTFT PLS
Screen size5.5" inches6.5" inches
Screen-to-body ratio~71.4% (screen-to-body ratio)~82.8% (screen-to-body ratio)
Display resolution720x1280 pixels720x1600 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)267 PPI270 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 5Not supported
Display featuresfeature not registered60Hz

📶 Mobile networks

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
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/upload300/50 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 850/1700/1900UMTS 850/900/1900/2100
Primary 4G networkLTE Cat6 (Bands 2, 4, 5, 7, 12, 66, 71)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 networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedUMTS 850/900/1900/2100
Secondary 4G networkNot supportedLTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
Secondary data networkNot supportedGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A

📷 Camera

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Back camera (main camera)13 megapixels(quad camera)
48 megapixels
8MP ultrawidef/2.21/4"1.12µm123°
2MP macrof/2.4
2MP depthf/2.4
Main camera resolution4128x3096 pixels8000x6000 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.7 (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 on both camerasHDR photo on both cameras
Camera extrasfeature not registeredfeature not registered

📸 Front camera

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Front camera (secondary)13 megapixels13 megapixels
Front camera resolution4128x3096 pixels4128x3096 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/1.7 (aperture)f/2.2 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registered1/3.1" inches
Pixel sizefeature not registered1.12µm pixel

🔉 Sound and multimedia

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
LoudspeakerSupportedMono sound (not stereo)
Active noise cancellation2 microphones or more2 microphones or more
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

🔌 Connectivity

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
USBMicroUSB 2.0, USB OTG On-The-GoUSB 2.0 Type-C reversible connector
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth4.2 + A2DP5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
WiFi Direct, hotspot
802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
WiFi Direct, hotspot
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedNot supported
Infrared portNot supportedNot supported

🧭 Sensors

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
SensorsAccelerometer
Ambient Light sensor
ANT+
Compass
Face unlock
Gyroscope
Proximity sensor
Accelerometer
Compass
Face unlock
Fingerprint sensor (rear-mounted)
Gyroscope
Proximity sensor
Virtual ambient light sensor
Vibrating alertSupportedSupported

🔋 Battery

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Battery typeLi-Ion: Lithium-Ion (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity3300 mAh5000 mAh
Charger, watts Standard charging15W (9V/1.67A) Fast battery charging
Talk time autonomy31 hours (1.3 days)feature not registered
Standby768 hours (32 days)feature not registered

➕ Other features

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneous- Colors: Black, Blue
- One UI
- Colors: Black, White, Blue, Red

☢️ Radiation rate

Samsung Galaxy J7 Star (SM-J737T)Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
SAR 1.6W/kg (USA, Mexico, etc.)1.36W/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)
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