LG X400 (K121S) vs Samsung Galaxy A8s (SM-G887F/DS)

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Side by side comparison between LG X400 vs Samsung Galaxy A8s phones, differences, pros, cons and full specifications. What's the better?

4/12/2020 6:51 PM, updated: 11/23/2021 8:25 AM

Compare Samsung Galaxy A8s X LG X400 (K121S) 06Points

Specifications Compare Models Pictures

5.3"
IPS

720x1280

13
MP

5mp

2GB
RAM

Octa-core

2800
mAh

(Removable)

26Points Samsung Galaxy A8s (SM-G887F/DS) Compare LG X400 X

Specifications Compare Models Pictures

6.4"
PLS

1080x2340

24
MP

24mp

6GB
RAM

Octa-core

3400
mAh

(Non removable)

What's the better phone? Samsung Galaxy A8s (SM-G887F/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!

6 Advantages LG X400 (K121S)	vs	26 Advantages Samsung Galaxy A8s (SM-G887F/DS)
+Until 256GB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+142 grams (4.97 ounces)22% Lighter	vs	173 grams (6.06 ounces)
+TFT IPS LCDAdvantage TFT IPS LCD display is brighter and more vivid	vs	TFT PLS
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	Li-Ion: lithium-ion (Non removable)
+FM (RDS)Advantage The radio lets you listen to your songs and sports in general	vs	Not supported
+Digital TVAdvantage Watch your favorite TV shows anywhere	vs	Not supported
1.5GHz 64bit Octa-core	vs	+2.2GHz 64bit Octa-core80% 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 (22GB available)	vs	+128GB (109GB available)4 times More internal storage for applications and files
8 millimeters (0.31 inches)	vs	+7.4 millimeters (0.29 inches)8% Thinner
Plastic body, glass front	vs	+Aluminum frame, glass front/backAdvantage More resistant material
720x1280 pixels	vs	+1080x2340 pixels174% Higher resolution screen
277 PPI	vs	+403 PPI45% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.3"	vs	+6.4"21% Larger screen
(back) 13MP	vs	+(triple camera) 24MP + 10MP + 5MP199% Higher resolution main camera
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
HDR photo only main camera	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
1/3" inches	vs	+1/2.8" inches7% The larger sensor camera lets you take photos with better depth.
f/2.2 (aperture)	vs	+f/1.7 (aperture)29% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MP	vs	+(front) 24MP4 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 10Advantage Android 10 is newer and safer
(4G LTE-A) 300 Mbps	vs	+(4G LTE-A) 800 Mbps167% Faster for surfing the internet and download files
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
2800 mAh	vs	+3400 mAh21% 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)Advantage You can have more mobile carriers/operators on the same device.
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, 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.
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

16 million

LED flash

Autofocus / PDAF: phase detection autofocus

EIS: Digital stabilization

(front) Full HD (1920x1080)

4G LTE-A

Capacitive

+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
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Change model		Choose the model
Model	X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Other model names	SKT LG X400, LGM-K121S, LGMK121S (SK Telecom)	Galaxy A8S (128GB+6GB RAM) SM-G8870ZKDCHC
Country or region available	South Korea	(Global, International), Taiwan
Brand	LG	Samsung
Release date	2/1/2017	12/1/2018
Depth	8 millimeters (0.31 inches)	7.4 millimeters (0.29 inches)
Size (width x height)	75.29 x 148.7 millimeters (2.96 x 5.85 in)	74.9 x 158.4 millimeters (2.95 x 6.24 in)
Weight	142 grams (4.97 ounces)	173 grams (6.06 ounces)
Build, materials	Plastic body, glass front	Aluminum frame, glass front/back
Protection against water and others	Not supported	Not supported
📲 Display
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Display type	TFT IPS LCD	TFT PLS
Screen size	5.3" inches	6.4" inches
Screen-to-body ratio	~69.2% (screen-to-body ratio)	~84.7% (screen-to-body ratio)
Display resolution	720x1280 pixels	1080x2340 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	277 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 3
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
System version	Android 7.0 Nougat	Android 9.0 Pie
Firmware update	Android 8.0 Oreo	Android 10
User Interface	feature not registered	One UI
⚙️ Processor
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Chipset	64bit: MediaTek MT6750 (28nm)	64bit: Qualcomm Snapdragon 710 SDM710 (10nm)
CPU	Octa-core, 2 processors: 4x 1.5GHz ARM Cortex-A53 (Quad-core) 4x 1GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 2x 2.2GHz Kryo 360 Gold (Dual-core) 6x 1.7GHz Kryo 360 Silver (Hexa-core)
GPU graphical controller	ARM Mali-T860 MP2 520Mhz	Qualcomm Adreno 616 500Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
RAM memory	2GB LPDDR3	6GB LPDDR4X
Internal storage	32GB (22GB available)	128GB (109GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Not supported
📶 Mobile networks
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	300/50 Mbps	800/150 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Tri-Band 900/1800/1900	Dual-Band 900/1800
Primary 2G network	GSM 900/1800/1900	GSM 900/1800
Primary 3G network	UMTS 2100	UMTS 2100
Primary 4G network	LTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8) VoLTE	LTE Cat15/13 (1, 3, 7, 8, 28) TD-LTE (38)
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	UMTS 2100
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
📷 Camera
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Back camera (main camera)	13 megapixels	(triple camera) 24 megapixels 10MP telephoto f/2.452mm1/3.9"1.0µmAF2x-optical-zoom 5MP depth f/2.2
Main camera resolution	4160x3120 pixels	5632x4224 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 30 fps
Flash	LED flash	LED flash
Focal aperture	f/2.2 (aperture)	f/1.7 (aperture)
Focal length	feature not registered	27mm (lens)
Sensor size	1/3" inches	1/2.8" inches
Pixel size	1.12µm pixel	0.9µm pixel
Autofocus	Autofocus	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo only main camera	HDR photo on both cameras
Camera extras	feature not registered	1080p@240fps
📸 Front camera
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Front camera (secondary)	5 megapixels	24 megapixels
Front camera resolution	2560x1920 pixels	5632x4224 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.4 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	1/5" inches	1/2.8" inches
Pixel size	1.12µm pixel	0.9µm pixel
🔉 Sound and multimedia
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Loudspeaker	Supported	Stereo sound
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	Not supported
TV	Digital TV	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 X400 (K121S)	Galaxy A8s (SM-G887F/DS)
USB	MicroUSB 2.0, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
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	Supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor	Accelerometer Ambient light sensor ANT+ Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
Battery type	Li-Ion: lithium-ion (Removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	2800 mAh	3400 mAh
Charger, watts	Wired charging	18W Wired fast charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	9 hours	feature not registered
Standby	390 hours (16.3 days)	feature not registered
➕ Other features
	LG X400 (K121S)	Galaxy A8s (SM-G887F/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, Gold • 2.5D Arc Glass screen • LG UX 5.0 • Wide-angle 120° front camera • KnockOn, Knock Code • DMB-TV (Korea)	• Colors: Black, Gradient Black, Blue, Pink-Blue, Yellow-Pink • Samsung Pay
☢️ Radiation rate
	LG X400 (K121S)	Galaxy A8s (SM-G887F/DS)
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