LG K50S (X540BMW) vs LG K40 (X420HM)

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Side by side comparison between LG K50S vs LG K40 phones, differences, pros, cons and full specifications. What's the better?

3/12/2020 11:19 AM, updated: 7/12/2020 10:16 PM

Compare LG K40 X LG K50S (X540BMW) 12Points

Specifications Compare Models Pictures

6.5"
IPS

720x1520

13
MP

13mp

3GB
RAM

Octa-core

4000
mAh

(Non removable)

05Points LG K40 (X420HM) Compare LG K50S X

Specifications Compare Models Pictures

5.7"
IPS

720x1440

16
MP

8mp

2GB
RAM

Octa-core

3000
mAh

(Non removable)

What's the better phone? LG K50S (X540BMW)

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!

12 Advantages LG K50S (X540BMW)	vs	5 Advantages LG K40 (X420HM)
+3GB LPDDR350% More RAM memory. Typically more responsive and better for multitasking.	vs	2GB LPDDR3
+8.2 millimeters (0.32 inches)1% Thinner	vs	8.3 millimeters (0.33 inches)
+720x1520 pixels6% Higher resolution screen	vs	720x1440 pixels
+6.5"14% Larger screen	vs	5.7"
+(triple camera) 13MP + 5MP + 2MP24% Higher resolution main camera	vs	(back) 16MP
+(front) 13MP60% Higher resolution secondary camera to take pictures and selfies	vs	(front) 8MP
+Android 9.0 PieAdvantage Android 9.0 Pie is newer and safer	vs	Android 8.1 Oreo
+Face unlockAdvantage Sensors help you use the device	vs	Not supported
+4000 mAh33% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0, USB OTG On-The-Go
32GB (18GB available)	vs	+32GB (20GB available)11% More internal storage for applications and files
194 grams (6.79 ounces)	vs	+150 grams (5.25 ounces)29% Lighter
259 PPI	vs	+282 PPI9% Crisper display of text, images and videos because it has more pixels per inch (ppi)
LED flash	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light
f/2.2 (aperture)	vs	+f/2.0 (aperture)10% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.

29 Common items in both devices

2GHz 64bit Octa-core (12nm)

eMMC 5.1

Until 1TB microSD, microSDXC

Plastic body, glass front

TFT IPS LCD

16 million

Only digital zoom

+22 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 K50S (X540BMW)	LG K40 (X420HM)
Change model		Choose the model
Model	K50S (X540BMW)	K40 (X420HM)
Other model names	LG K50s LM-X540BMW, LMX540BMW	LG K40 LMX420HM, LM-X420HM, LG-LMX420HM
Country or region available	Brazil, Costa Rica, Guatemala, Panama	(Latin America), Colombia
Brand	LG	LG
Release date	9/1/2019	3/31/2019
Depth	8.2 millimeters (0.32 inches)	8.3 millimeters (0.33 inches)
Size (width x height)	77.5 x 165.8 millimeters (3.05 x 6.53 in)	71.9 x 153 millimeters (2.83 x 6.02 in)
Weight	194 grams (6.79 ounces)	150 grams (5.25 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.	MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
📲 Display
	LG K50S (X540BMW)	LG K40 (X420HM)
Display type	TFT IPS LCD	TFT IPS LCD
Screen size	6.5" inches	5.7" inches
Screen-to-body ratio	~82.1% (screen-to-body ratio)	~76.2% (screen-to-body ratio)
Display resolution	720x1520 pixels (19:9)	720x1440 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	259 PPI	282 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	LG K50S (X540BMW)	LG K40 (X420HM)
System version	Android 9.0 Pie	Android 8.1 Oreo
Firmware update	feature not registered	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	LG K50S (X540BMW)	LG K40 (X420HM)
Chipset	64bit: MediaTek Helio P22 (MT6762) (12nm)	64bit: MediaTek Helio P22 (MT6762) (12nm)
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 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	PowerVR GE8320 (650MHz)	PowerVR GE8320 (650MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	LG K50S (X540BMW)	LG K40 (X420HM)
RAM memory	3GB LPDDR3	2GB LPDDR3
Internal storage	32GB (18GB available) eMMC 5.1	32GB (20GB available) eMMC 5.1
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	LG K50S (X540BMW)	LG K40 (X420HM)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) nano-SIM (4FF)
Maximum Download / Upload	300/50 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 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat6 (Bands 1, 2, 3, 5, 7, 8, 28)	LTE Cat6 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 28, 66)
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+, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	LG K50S (X540BMW)	LG K40 (X420HM)
Back camera (main camera)	(triple camera) 13 megapixels 5MP ultrawide f/2.21.12μm115° 2MP depth f/2.41.75μm85°	16 megapixels
Main camera resolution	4128x3096 pixels	4608x3456 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash on both cameras
Focal aperture	f/2.2 (aperture)	f/2.0 (aperture)
Focal length	26mm lens	feature not registered
Sensor size	feature not registered	1/3" inches
Pixel size	feature not registered	1µm 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 K50S (X540BMW)	LG K40 (X420HM)
Front camera (secondary)	13 megapixels	8 megapixels
Front camera resolution	4128x3096 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	LED
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	LG K50S (X540BMW)	LG K40 (X420HM)
Loudspeaker	Supported	Supported
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, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	LG K50S (X540BMW)	LG K40 (X420HM)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0, USB OTG On-The-Go
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	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS	A-GPS, GeoTagging
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	LG K50S (X540BMW)	LG K40 (X420HM)
Sensors	Accelerometer Ambient light sensor Face unlock Fingerprint sensor (rear-mounted) Proximity sensor	Accelerometer Ambient light sensor Fingerprint sensor (rear-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG K50S (X540BMW)	LG K40 (X420HM)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	4000 mAh	3000 mAh
Charger, watts	6W (5V/1.2A) Wired charging	Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	18 hours	8 hours
Standby	504 hours (21 days)	100 hours (4.2 days)
➕ Other features
	LG K50S (X540BMW)	LG K40 (X420HM)
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: Aurora Black, Moroccan Blue • DTS:X 3D surround sound • Eco Playback	• Colors: Black, Moroccan Blue, Platinum Gray • 18:9 ratio FullVision display • LED notification • DTS-X Surround sound
☢️ Radiation rate
	LG K50S (X540BMW)	LG K40 (X420HM)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered