LG K40 (X420HM) vs Samsung Galaxy M30s (SM-M307F/DS 128GB)

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Side by side comparison between LG K40 vs Samsung Galaxy M30s phones, differences, pros, cons and full specifications. What's the better?

3/30/2020 8:33 PM, updated: 10/26/2021 8:13 AM

Compare Samsung Galaxy M30s X LG K40 (X420HM) 05Points

Specifications Compare Models Pictures

5.7"
IPS

720x1440

16
MP

8mp

2GB
RAM

Octa-core

3000
mAh

(Non removable)

20Points Samsung Galaxy M30s (SM-M307F/DS 128GB) Compare LG K40 X

Specifications Compare Models Pictures

6.4"
AMOLED

1080x2340

48
MP

16mp

6GB
RAM

Octa-core

6000
mAh

(Non removable)

What's the better phone? Samsung Galaxy M30s (SM-M307F/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!

5 Advantages LG K40 (X420HM)	vs	20 Advantages Samsung Galaxy M30s (SM-M307F/DS 128GB)
+150 grams (5.25 ounces)25% Lighter	vs	188 grams (6.58 ounces)
+8.3 millimeters (0.33 inches)7% Thinner	vs	8.9 millimeters (0.35 inches)
+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light	vs	LED flash
+Ambient light sensorAdvantage Sensors help you use the device	vs	Not supported
+MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
2GHz 64bit Octa-core (12nm)	vs	+2.3GHz 64bit Octa-core (10nm)18% More powerful processor, you can open your applications faster
2GB LPDDR3	vs	+6GB LPDDR4X2 times More RAM memory. Typically more responsive and better for multitasking.
32GB (20GB available)	vs	+128GB (109GB available)4 times More internal storage for applications and files
eMMC 5.1	vs	+UFS 2.1Advantage Fastest write and read storage.
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
720x1440 pixels	vs	+1080x2340 pixels144% Higher resolution screen
282 PPI	vs	+403 PPI43% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.7"	vs	+6.4"12% Larger screen
(back) 16MP	vs	+(triple camera) 48MP + 8MP + 5MP3 times Higher resolution main camera
1/3" inches	vs	+1/2" inches50% The larger sensor camera lets you take photos with better depth.
(front) 8MP	vs	+(front) 16MP99% 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 8.1 Oreo	vs	+Android 9.0 PieAdvantage Android 9.0 Pie is newer and safer
(4G LTE-A) 300 Mbps	vs	+(4G LTE-A) 600 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+CompassAdvantage Sensors help you use the device
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
3000 mAh	vs	+6000 mAh100% 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.
MicroUSB 2.0, USB OTG On-The-Go	vs	+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.

23 Common items in both devices

Until 1TB microSD, microSDXC

Plastic body, glass front

16 million

Only digital zoom

PDAF: phase detection autofocus

EIS: Digital stabilization

HDR photo on both cameras

+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 K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Change model		Choose the model
Model	K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Other model names	LG K40 LMX420HM, LM-X420HM, LG-LMX420HM	Samsung Galaxy M30s SM-M307F/Dual-Sim (128GB + 6GB RAM)
Country or region available	(Latin America), Colombia	India
Brand	LG	Samsung
Release date	3/31/2019	10/30/2019, Announced: 9/18/2019
Depth	8.3 millimeters (0.33 inches)	8.9 millimeters (0.35 inches)
Size (width x height)	71.9 x 153 millimeters (2.83 x 6.02 in)	75.1 x 159 millimeters (2.96 x 6.26 in)
Weight	150 grams (5.25 ounces)	188 grams (6.58 ounces)
Build, materials	Plastic body, glass front	Plastic 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 K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Display type	TFT IPS LCD	Super AMOLED
Screen size	5.7" inches	6.4" inches
Screen-to-body ratio	~76.2% (screen-to-body ratio)	~84.2% (screen-to-body ratio)
Display resolution	720x1440 pixels	1080x2340 pixels (19.5:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	282 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	60Hz
Display features	feature not registered	420nits[peak]
🤖 Operating System
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
System version	Android 8.1 Oreo	Android 9.0 Pie
Firmware update	feature not registered	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Chipset	64bit: MediaTek Helio P22 (MT6762) (12nm)	64bit: Samsung Exynos 9611 (10nm)
CPU	Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz 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	PowerVR GE8320 (650MHz)	ARM Mali-G72 MP3 (850MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
RAM memory	2GB LPDDR3	6GB LPDDR4X
Internal storage	32GB (20GB available) eMMC 5.1	128GB (109GB available) UFS 2.1
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
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	300/50 Mbps	600/150 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 850/900/1900/2100
Primary 4G network	LTE Cat6 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 28, 66)	LTE LTE Cat12/13 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A	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	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
📷 Camera
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Back camera (main camera)	16 megapixels	(triple camera) 48 megapixels 8MP ultrawide f/2.212mm1/4.0"1.12µm 5MP depth f/2.2
Main camera resolution	4608x3456 pixels	8000x6000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash on both cameras	LED flash
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	1/3" inches	1/2" inches
Pixel size	1µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection 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	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Front camera (secondary)	8 megapixels	16 megapixels
Front camera resolution	3264x2448 pixels	4608x3456 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	LED	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm lens
Sensor size	feature not registered	1/3.1" inches
Pixel size	feature not registered	1µm pixel
🔉 Sound and multimedia
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	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
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
USB	MicroUSB 2.0, USB OTG On-The-Go	USB 2.0 Type-C reversible connector
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO 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	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Sensors	Accelerometer Ambient light sensor Fingerprint sensor (rear-mounted) Proximity sensor	Accelerometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Battery type	Li-Ion: lithium-ion (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3000 mAh	6000 mAh
Charger, watts	Wired charging	15W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	8 hours	feature not registered
Standby	100 hours (4.2 days)	feature not registered
➕ Other features
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
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, Moroccan Blue, Platinum Gray • 18:9 ratio FullVision display • LED notification • DTS-X Surround sound	• Colors: Opal Black, Sapphire Blue, Pearl White
☢️ Radiation rate
	LG K40 (X420HM)	Galaxy M30s (SM-M307F/DS 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.492W/kg (head), 1.13W/kg (body)