Samsung Galaxy J3 2018 (SM-J337U) vs Samsung Galaxy M21s (SM-F415F/DS)

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Side by side comparison between Samsung Galaxy J3 (2018) vs Samsung Galaxy M21s phones, differences, pros, cons and full specifications. What's the better?

11/25/2020 11:20 AM, updated: 1/18/2023 4:22 AM

Compare Samsung Galaxy M21s X Samsung Galaxy J3 2018 (SM-J337U) 03Points

Specifications Compare Models Pictures

5"
IPS

720x1280

8
MP

5mp

2GB
RAM

Quad-core

2600
mAh

(Removable)

27Points Samsung Galaxy M21s (SM-F415F/DS) Compare Samsung Galaxy J3 (2018) X

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2340

64
MP

32mp

4GB
RAM

Octa-core

6000
mAh

(Non removable)

What's the better phone? Samsung Galaxy M21s (SM-F415F/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!

3 Advantages Samsung Galaxy J3 2018 (SM-J337U)	vs	27 Advantages Samsung Galaxy M21s (SM-F415F/DS)
+152 grams (5.32 ounces)26% Lighter	vs	191 grams (6.69 ounces)
+Proximity sensorAdvantage Sensors help you use the device	vs	Virtual proximity sensor
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	LiPo: li-ion polymer (Non removable)
1.4GHz 64bit Quad-core (14nm)	vs	+2.3GHz 64bit Octa-core (10nm)104% More powerful processor, you can open your applications faster
2GB LPDDR3	vs	+4GB LPDDR4X100% More RAM memory. Typically more responsive and better for multitasking.
16GB (9GB available)	vs	+64GB (49GB available)4 times More internal storage for applications and files
eMMC 5.0	vs	+UFS 2.1Advantage Fastest write and read storage.
9 millimeters (0.35 inches)	vs	+8.9 millimeters (0.35 inches)1% Thinner
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
720x1280 pixels	vs	+1080x2340 pixels174% Higher resolution screen
294 PPI	vs	+403 PPI37% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5"	vs	+6.4"28% Larger screen
(back) 8MP	vs	+(triple camera) 64MP + 8MP + 5MP9 times Higher resolution main camera
Not supported	vs	+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness
HDR photo only main camera	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
f/1.9 (aperture)	vs	+f/1.8 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MP	vs	+(front) 32MP6 times 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
Android 8.0 Oreo	vs	+Android 12Advantage Android 12 is newer and safer
(4G LTE) 150 Mbps	vs	+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+Ambient light sensorAdvantage Sensors help you use the device
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (rear-mounted)Advantage Sensors help you use the device
2600 mAh	vs	+6000 mAh131% 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 You can have more mobile carriers/operators on the same device.
Not supported	vs	+Active noise cancellationAdvantage More noise-canceling microphones allow for better quality in calls and audio for recorded videos
802.11 b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
4.2 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster
MicroUSB 2.0	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.
Not supported	vs	+Gorilla Glass 3Advantage Protection against scratches on the screen lets you carry your phone with your keys

22 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

+15 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Change model
Model	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Other model names	Galaxy J3 (2018) Unlocked SM-J337UZKAXAA	Galaxy M21s SM-F415F/Dual-Sim (4GB RAM)
Country or region available	USA	(Latin America), Brazil
Brand	Samsung	Samsung
Release date	5/1/2018	11/6/2020
Depth	9 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)	75.1 x 159.2 millimeters (2.96 x 6.27 in)
Weight	152 grams (5.32 ounces)	191 grams (6.69 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Display type	TFT IPS LCD	Super AMOLED
Screen size	5" inches	6.4" inches
Screen-to-body ratio	~68.8% (screen-to-body ratio)	~84.1% (screen-to-body ratio)
Display resolution	720x1280 pixels	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	294 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 3
Refresh rate	feature not registered	60Hz
Display features	feature not registered	420nits[peak]
🤖 Operating System
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
System version	Android 8.0 Oreo	Android 10
Firmware update	feature not registered	Android 12
User Interface	feature not registered	One UI 2.5 / 3.1 / 4.1
⚙️ Processor
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Chipset	64bit: Samsung Exynos 7570 (14nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	ARM Mali-T720 MP1 (830MHz)	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
RAM memory	2GB LPDDR3	4GB LPDDR4X
Internal storage	16GB (9GB available) eMMC 5.0	64GB (49GB available) UFS 2.1
External storage	Until 512GB microSD, microSDXC (dedicated slot)	Until 512GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	150/50 Mbps	300/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat4 (Bands 2, 3, 4, 5, 7, 12, 14)	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE
Secondary data network	Not supported	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Back camera (main camera)	8 megapixels	(triple camera) 64 megapixels 8MP ultrawide f/2.2123°12mm1/4"1.12µm 5MP depth f/2.2
Main camera resolution	3264x2448 pixels	10120x6328 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.9 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	1/1.72" inches
Pixel size	feature not registered	0.8µm pixel
Autofocus	Autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	HDR photo only main camera	HDR photo on both cameras
Camera extras	feature not registered	4K@30fps 1080p@30fps
📸 Front camera
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Front camera (secondary)	5 megapixels	32 megapixels
Front camera resolution	2560x1920 pixels	6528x4896 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	1/2.8" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	Not supported	2 microphones or more
Radio	FM	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
USB	MicroUSB 2.0	USB 2.0 Type-C reversible connector
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	4.2 + A2DP	5.0 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Sensors	Accelerometer Compass Gyroscope Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Virtual proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Battery type	Li-Ion: lithium-ion (Removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	2600 mAh	6000 mAh
Charger, watts	Wired charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	48 hours (2 days)
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Black	• Colors: Black, Blue
☢️ Radiation rate
	Galaxy J3 2018 (SM-J337U)	Galaxy M21s (SM-F415F/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	1.2W/kg (head), 1.58W/kg (body)	0.383W/kg (head)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered