LG K42 (K420YMW) vs Samsung Galaxy A3 Duos (SM-A300M/DS)

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Side by side comparison between LG K42 vs Samsung Galaxy A3 phones, differences, pros, cons and full specifications. What's the better?

3/7/2021 7:46 PM, updated: 11/22/2022 5:44 PM

Compare Samsung Galaxy A3 X LG K42 (K420YMW) 22Points

Specifications Compare Models Pictures

6.6"
IPS

720x1600

13
MP

8mp

3GB
RAM

Octa-core

4000
mAh

(Non removable)

06Points Samsung Galaxy A3 Duos (SM-A300M/DS) Compare LG K42 X

Specifications Compare Models Pictures

4.5"
AMOLED

540x960

8
MP

5mp

1GB
RAM

Quad-core

1900
mAh

(Non removable)

What's the better phone? LG K42 (K420YMW)

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!

22 Advantages LG K42 (K420YMW)	vs	6 Advantages Samsung Galaxy A3 Duos (SM-A300M/DS)
+2GHz 64bit Octa-core (12nm)89% More powerful processor, you can open your applications faster	vs	1.2GHz 64bit Quad-core (28nm)
+3GB LPDDR4X2 times More RAM memory. Typically more responsive and better for multitasking.	vs	1GB LPDDR2
+64GB (45GB available)3 times More internal storage for applications and files	vs	16GB (12GB available)
+eMMC 5.1Advantage Fastest write and read storage.	vs	eMMC 4.5
+Until 1TB microSD, microSDXC15 times More external storage for files using memory cards	vs	Until 64GB microSD, microSDXC
+720x1600 pixels122% Higher resolution screen	vs	540x960 pixels
+266 PPI9% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	245 PPI
+6.6"47% Larger screen	vs	4.5"
+(quad camera) 13MP + 5MP + 2MP + 2MP173% Higher resolution main camera	vs	(back) 8MP
+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	HDR photo only main camera
+f/1.8 (aperture)33% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.4 (aperture)
+(front) 8MP59% Higher resolution secondary camera to take pictures and selfies	vs	(front) 5MP
+(front) Full HD (1920x1080)4 times More image quality for recording videos with the secondary camera	vs	(front) WVGA (800x480)
+Android 10Advantage Android 10 is newer and safer	vs	Android 6.0.1 Marshmallow
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+Fingerprint sensor (side-mounted)Advantage Sensors help you use the device	vs	Not supported
+4000 mAh111% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	1900 mAh
+10W186% More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.	vs	3.5W
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)
+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster	vs	4.0 + A2DP
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0
+MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
184 grams (6.44 ounces)	vs	+110 grams (3.85 ounces)67% Lighter
8.4 millimeters (0.33 inches)	vs	+6.9 millimeters (0.27 inches)22% Thinner
Plastic body, glass front	vs	+Aluminum body, glass frontAdvantage More resistant material
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+Gorilla Glass 4Advantage Protection against scratches on the screen lets you carry your phone with your keys

23 Common items in both devices

60Hz

16 million

LED flash

Only digital zoom

PDAF: phase detection autofocus / Autofocus

EIS: Digital stabilization

Full HD (1920x1080)

+16 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
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Change model		Choose the model
Model	K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Other model names	LG K42 LMK420YMW, LM-K420YMW Dual-SIM	Galaxy A3 (4G LTE) SM-A300M/Dual-Sim
Country or region available	(Global, International), United Arab Emirates, India, Israel, Taiwan	Brazil
Brand	LG	Samsung
Release date	9/21/2020	11/1/2014
Depth	8.4 millimeters (0.33 inches)	6.9 millimeters (0.27 inches)
Size (width x height)	76.7 x 165 millimeters (3.02 x 6.5 in)	65.5 x 130.1 millimeters (2.58 x 5.12 in)
Weight	184 grams (6.44 ounces)	110 grams (3.85 ounces)
Build, materials	Plastic body, glass front	Aluminum body, glass front
Protection against water and others	MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.	Not supported
📲 Display
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Display type	TFT IPS LCD	Super AMOLED
Screen size	6.6" inches	4.5" inches
Screen-to-body ratio	~83.1% (screen-to-body ratio)	~65.5% (screen-to-body ratio)
Display resolution	720x1600 pixels (20:9)	540x960 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	266 PPI	245 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 4
Refresh rate	60Hz	60Hz
Display features	Not supported	Not supported
🤖 Operating System
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
System version	Android 10	Android 4.4.4 KitKat
Firmware update	feature not registered	Android 6.0.1 Marshmallow
User Interface	feature not registered	TouchWiz UX
⚙️ Processor
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Chipset	64bit: MediaTek Helio P22 (MT6762) (12nm)	64bit: Qualcomm Snapdragon 410 (MSM8916) (28nm)
CPU	Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core)	Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	PowerVR GE8320 (650MHz)	Qualcomm Adreno 306 (400MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
RAM memory	3GB LPDDR4X	1GB LPDDR2
Internal storage	64GB (45GB available) eMMC 5.1	16GB (12GB available) eMMC 4.5
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 64GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	150/50 Mbps	150/50 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 850/900/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat4 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38, 39, 40) VoLTE	LTE Cat4 (1, 2, 4, 5, 7, 17)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Back camera (main camera)	(quad camera) 13 megapixels 5MP ultrawide f/2.2115°1/5.0"1.12µm 2MP macro f/2.41.75μm 2MP depth f/2.41.75μm	8 megapixels
Main camera resolution	4128x3096 pixels	3264x2448 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/1.8 (aperture)	f/2.4 (aperture)
Focal length	27mm lens	31mm lens
Sensor size	1/3.1" inches	feature not registered
Pixel size	1.12µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	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	Not supported
HDR	HDR photo on both cameras	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Front camera (secondary)	8 megapixels	5 megapixels
Front camera resolution	3264x2448 pixels	2592x1944 pixels
Video recording (secondary)	Full HD (1920x1080)	WVGA (800x480)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.2 (aperture)
Focal length	feature not registered	23mm lens
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.264, H.263, WMV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	4.0 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz) WiFi hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS
NFC	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Sensors	Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	4000 mAh	1900 mAh
Charger, watts	10W (5V/2A) Wired charging	3.5W (5V/0.7A) Wired charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	16 hours	12 hours
Standby	180 hours (7.5 days)	feature not registered
➕ Other features
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
Call control	Voice dialing, Voice recorder, Voice commands	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: Titan, Green, Red • Silicon case included • LG 3D Sound Engine	• Colors: Black, White, Blue, Silver, Pink, Gold • Java framework
☢️ Radiation rate
	LG K42 (K420YMW)	Galaxy A3 Duos (SM-A300M/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.52W/kg (head), 1.08W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.342W/kg (head), 0.231W/kg (body)