LG X400 (K121S) vs Asus Zenfone Zoom S (128GB)

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Side by side comparison between LG X400 vs Asus Zenfone Zoom S phones, differences, pros, cons and full specifications. What's the better?

7/31/2017 6:19 AM, updated: 3/16/2020 9:13 PM

Compare Asus Zenfone Zoom S X LG X400 (K121S) 05Points

Specifications Compare Models Pictures

5.3"
IPS

720x1280

13
MP

5mp

2GB
RAM

Octa-core

2800
mAh

(Removable)

22Points Asus Zenfone Zoom S (128GB) Compare LG X400 X

Specifications Compare Models Pictures

5.5"
AMOLED

1080x1920

12
MP

13mp

4GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Asus Zenfone Zoom S (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 X400 (K121S)	vs	22 Advantages Asus Zenfone Zoom S (128GB)
+142 grams (4.97 ounces)20% Lighter	vs	170 grams (5.95 ounces)
+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files	vs	(4G LTE) 150 Mbps
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	Li-Ion: lithium-ion (Non removable)
+Digital TVAdvantage Watch your favorite TV shows anywhere	vs	Not supported
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
1.5GHz 64bit Octa-core	vs	+2GHz 64bit Octa-core85% More powerful processor, you can open your applications faster
2GB LPDDR3	vs	+4GB LPDDR3100% More RAM memory. Typically more responsive and better for multitasking.
32GB (22GB available)	vs	+128GB (118GB available)4 times More internal storage for applications and files
Plastic body, glass front	vs	+Aluminum body, glass frontAdvantage More resistant material
TFT IPS LCD	vs	+AMOLEDAdvantage AMOLED display is brighter and more vivid
720x1280 pixels	vs	+1080x1920 pixels125% Higher resolution screen
277 PPI	vs	+401 PPI45% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.3"	vs	+5.5"4% Larger screen
(back) 13MP	vs	+(dual camera) 12MP + 12MP85% Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
EIS: Digital stabilization	vs	+OIS (4-axis): Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video
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	+1/2.5" inches20% 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) 13MP160% 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
Not supported	vs	+GyroscopeAdvantage Sensors help you use the device
2800 mAh	vs	+5000 mAh79% 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) (hybrid slot/shares the same microSD 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.
Not supported	vs	+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys

25 Common items in both devices

Until 256GB microSD, microSDXC

8 millimeters (0.31 inches)

16 million

Autofocus / LDAF/PDAF: laser/phase detection autofocus

(front) Full HD (1920x1080)

Android 8.0 Oreo

4G LTE-A / 4G LTE

+18 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)	Asus Zenfone Zoom S (128GB)
Change model		Choose the model
Model	X400 (K121S)	Zenfone Zoom S (128GB)
Other model names	SKT LG X400, LGM-K121S, LGMK121S (SK Telecom)	Asus Zenfone Zoom S ZE553KL, Asus Zenfone 3 Zoom
Country or region available	South Korea	(Europe), Indonesia
Brand	LG	Asus
Release date	2/1/2017	5/1/2017
Depth	8 millimeters (0.31 inches)	8 millimeters (0.31 inches)
Size (width x height)	75.29 x 148.7 millimeters (2.96 x 5.85 in)	77 x 154.3 millimeters (3.03 x 6.07 in)
Weight	142 grams (4.97 ounces)	170 grams (5.95 ounces)
Build, materials	Plastic body, glass front	Aluminum body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Display type	TFT IPS LCD	AMOLED
Screen size	5.3" inches	5.5" inches
Screen-to-body ratio	~69.2% (screen-to-body ratio)	~70.2% (screen-to-body ratio)
Display resolution	720x1280 pixels	1080x1920 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch 10-points
Pixel density (dot pitch)	277 PPI	401 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass 5
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
System version	Android 7.0 Nougat	Android 6.0.1 Marshmallow
Firmware update	Android 8.0 Oreo	Android 8.0 Oreo
User Interface	feature not registered	feature not registered
⚙️ Processor
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Chipset	64bit: MediaTek MT6750 (28nm)	64bit: Qualcomm Snapdragon 625 MSM8953 (14nm)
CPU	Octa-core, 2 processors: 4x 1.5GHz ARM Cortex-A53 (Quad-core) 4x 1GHz ARM Cortex-A53 (Quad-core)	Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core)
GPU graphical controller	ARM Mali-T860 MP2 520Mhz	Qualcomm Adreno 506 650Mhz
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
RAM memory	2GB LPDDR3	4GB LPDDR3
Internal storage	32GB (22GB available)	128GB (118GB available)
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	300/50 Mbps	150/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Tri-Band 900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 2100	TD-SCDMA 1900/2000 UMTS 850/900/2100
Primary 4G network	LTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8) VoLTE	LTE Cat4 850/900/1800/2100 (Bands 1,3,5,8)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A	GPRS, EDGE, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, LTE
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 X400 (K121S)	Asus Zenfone Zoom S (128GB)
Back camera (main camera)	13 megapixels	(dual camera) 12 megapixels 12MP f/2.859mm
Main camera resolution	4160x3120 pixels	4000x3000 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	4K UHD (3840x2160) 24 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/2.2 (aperture)	f/1.7 (aperture)
Focal length	feature not registered	25mm (lens)
Sensor size	1/3" inches	1/2.5" inches
Pixel size	1.12µm pixel	1.4µm pixel
Autofocus	Autofocus	LDAF/PDAF: laser/phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	OIS (4-axis): Optical 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	feature not registered
📸 Front camera
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Front camera (secondary)	5 megapixels	13 megapixels
Front camera resolution	2560x1920 pixels	4128x3096 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	feature not registered
Sensor size	1/5" inches	1/3" inches
Pixel size	1.12µm pixel	1.12µm pixel
🔉 Sound and multimedia
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	FM
TV	Digital TV	Not supported
Video formats	MP4, H.264, H.263, XviD, MKV	MP4, H.264, H.263
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, OGG, eAAC+, FLAC
🔌 Connectivity
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
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	4.2 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor	Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
Battery type	Li-Ion: lithium-ion (Removable)	Li-Ion: lithium-ion (Non removable)
Battery capacity	2800 mAh	5000 mAh
Charger, watts	Wired charging	18W Wired fast charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	9 hours	48 hours (2 days)
Standby	390 hours (16.3 days)	1008 hours (42 days)
➕ Other features
	LG X400 (K121S)	Asus Zenfone Zoom S (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, Gold • 2.5D Arc Glass screen • LG UX 5.0 • Wide-angle 120° front camera • KnockOn, Knock Code • DMB-TV (Korea)	• Colors: Black, Silver, Rose Gold • ASUS ZenUI 3.0 • 2.5D glass screen • 500nits brightness screen • Sony IMX362 back camera sensor • Sony IMX214 front camera sensor • DTS sound enhancement • 24-bit/192kHz audio • 100GB Google Drive
☢️ Radiation rate
	LG X400 (K121S)	Asus Zenfone Zoom S (128GB)
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