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LG X400 (K121K) vs Samsung Galaxy A72 (SM-A725M/DS)

Side by side comparison between LG X400 vs Samsung Galaxy A72 phones, differences, pros, cons and full specifications. What's the better?

,
5.3"
IPS

720x1280

13
MP

5mp

2GB
RAM

Octa-core

2800
mAh

(Removable)

vs
29Points Samsung Galaxy A72 (SM-A725M/DS) Compare LG X400 X
6.7"
AMOLED

1080x2400

64
MP

32mp

6GB
RAM

Octa-core

5000
mAh

(Non removable)

What's the better phone? Samsung Galaxy A72 (SM-A725M/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!

X400 (K121K)} 5 Advantages LG X400 (K121K) vs Galaxy A72 (SM-A725M/DS)} 29 Advantages Samsung Galaxy A72 (SM-A725M/DS)
+142 grams (4.97 ounces)43%
Lighter
vs203 grams (7.11 ounces)
+8 millimeters (0.31 inches)5%
Thinner
vs8.4 millimeters (0.33 inches)
+Proximity sensorAdvantage
Sensors help you use the device
vsNot supported
+Li-Ion: lithium-ion (Removable)Advantage
Removable battery can be replaced easily
vsLiPo: li-ion polymer (Non removable)
+Digital TVAdvantage
Watch your favorite TV shows anywhere
vsNot supported
1.5GHz 64bit Octa-corevs+2.3GHz 64bit Octa-core89%
More powerful processor, you can open your applications faster
2GB LPDDR3vs+6GB LPDDR4X2 times
More RAM memory. Typically more responsive and better for multitasking.
32GB (22GB available)vs+128GB (102GB available)4 times
More internal storage for applications and files
Until 256GB microSD, microSDXCvs+Until 1TB microSD, microSDXC3 times
More external storage for files using memory cards
TFT IPS LCDvs+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
720x1280 pixelsvs+1080x2400 pixels181%
Higher resolution screen
277 PPIvs+393 PPI42%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.3"vs+6.7"26%
Larger screen
(back) 13MPvs+(quad camera) 64MP + 8MP + 12MP + 5MP6 times
Higher resolution main camera
Only digital zoomvs+Digital and optical zoomAdvantage
The zoom allows for better focus and approach to take pictures
EIS: Digital stabilizationvs+OIS: Optical stabilizationAdvantage
Image stabilization prevents blurry photos and helps in recording motion video
Not supportedvs+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
HDR photo only main cameravs+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
1/3" inchesvs+1/1.72" inches74%
The larger sensor camera lets you take photos with better depth.
f/2.2 (aperture)vs+f/1.8 (aperture)22%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MPvs+(front) 32MP6 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
(front) Full HD (1920x1080)vs+(front) 4K UHD (3840x2160)3 times
More image quality for recording videos with the secondary camera
Android 8.0 Oreovs+Android 14Advantage
Android 14 is newer and safer
(4G LTE-A) 300 Mbpsvs+(4G LTE-A) 600 Mbps100%
Faster for surfing the internet and download files
Not supportedvs+Face unlock 2DAdvantage
Sensors help you use the device
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
2800 mAhvs+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.
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 + A2DPvs+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
MicroUSB 2.0, USB OTG On-The-Govs+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.
Not supportedvs+Gorilla Glass 5Advantage
Protection against scratches on the screen lets you carry your phone with your keys
Not supportedvs+IP67 certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

21 Common items in both devices
Plastic body, glass front
16 million
LED flash
Autofocus / PDAF: phase detection autofocus
4G LTE-A
Capacitive
Multitouch
+14 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 Clear highlight

📱 Model features

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
ModelX400 (K121K)Galaxy A72 (SM-A725M/DS)
Other model namesKT LG X400, LGM-K121K, LGMK121K (Korea Telecom)Galaxy A72 4G SM-A725M/Dual-SIM (128GB+6GB RAM)
Country or region availableSouth Korea
South Korea
(Latin America)BrazilChileUruguay
(Latin America), Brazil, Chile, Uruguay
BrandLGSamsung
Release date2/1/20173/26/2021, Announced: 3/17/2021
Depth8 millimeters (0.31 inches)8.4 millimeters (0.33 inches)
Size (width x height)75.29 x 148.7 millimeters (2.96 x 5.85 in)77.4 x 165 millimeters (3.05 x 6.5 in)
Weight142 grams (4.97 ounces)203 grams (7.11 ounces)
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedIP67 certified: dust proof and waterproof over 1 meter and 30min

📲 Display

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Display typeTFT IPS LCDSuper AMOLED
Screen size5.3" inches6.7" inches
Screen-to-body ratio~69.2% (screen-to-body ratio)~84.9% (screen-to-body ratio)
Display resolution720x1280 pixels1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)277 PPI393 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedGorilla Glass 5
Refresh ratefeature not registered90Hz
Display featuresfeature not registered800nits[peak]
Always-On Display

🤖 Operating System

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
System versionAndroid 7.0 NougatAndroid 11
Firmware updateAndroid 8.0 OreoAndroid 14
User Interfacefeature not registeredOne UI 3.1 / 4.1 / 5.1 / 6.0

⚙️ Processor

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Chipset64bit: MediaTek MT6750 (28nm)64bit: Qualcomm Snapdragon 720G SM7125 (8nm)
CPUOcta-core, 2 processors:
4x 1.5GHz ARM Cortex-A53 (Quad-core)
4x 1GHz ARM Cortex-A53 (Quad-core)
Octa-core, 2 processors:
2x 2.3GHz Kryo 465 Gold (Dual-core)
6x 1.8GHz Kryo 465 Silver (Hexa-core)
GPU graphical controllerARM Mali-T860 MP2 520MhzQualcomm Adreno 618
Performance (benchmark)feature not registeredAnTuTu: 279342 (v8)
Geekbench: 6483 (v4.4), 1627 (v5.1)
GFXBench: 15fps (ES 3.1 onscreen)

💽 Memory and storage

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
RAM memory2GB LPDDR36GB LPDDR4X
Internal storage32GB (22GB available)128GB (102GB available)
UFS 2.1
External storageUntil 256GB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)

📶 Mobile networks

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
SIM card1 slot (Single-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum Download / Upload300/50 Mbps600/100 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bands Expand band details Collapse details
GSM MHz bandTri-Band 900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 2100UMTS 850/900/1700/1900/2100
Primary 4G networkLTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8)
VoLTE
LTE Cat12 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedUMTS 850/900/1700/1900/2100
Secondary 4G networkNot supportedLTE Cat12 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66)
TD-LTE (38, 40, 41)
VoLTE
Secondary data networkNot supportedGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A

📷 Camera

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Back camera (main camera)13 megapixels(quad camera)
64 megapixels
8MP telephoto f/2.41.0µmPDAFOIS3x-optical-zoom
12MP ultrawide f/2.2123°1.12µm
5MP macro f/2.4
Main camera resolution4160x3120 pixels10120x6328 pixels
Video recording (primary)Full HD (1920x1080) 30 fps4K UHD (3840x2160) 30 fps
FlashLED flashLED flash
Focal aperturef/2.2 (aperture)f/1.8 (aperture)
Focal lengthfeature not registered26mm (lens)
Sensor size1/3" inches1/1.72" inches
Pixel size1.12µm pixel0.8µm pixel
AutofocusAutofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationOIS: Optical stabilization
ZoomOnly digital zoomDigital and optical zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedSupported
HDRHDR photo only main cameraHDR photo on both cameras
Camera extrasfeature not registeredfeature not registered

📸 Front camera

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Front camera (secondary)5 megapixels32 megapixels
Front camera resolution2560x1920 pixels6528x4896 pixels
Video recording (secondary)Full HD (1920x1080)4K UHD (3840x2160)
Front flashNot supportedNot supported
Focal aperturef/2.4 (aperture)f/2.2 (aperture)
Focal lengthfeature not registered26mm (lens)
Sensor size1/5" inches1/2.8" inches
Pixel size1.12µm pixel0.8µm pixel

🔉 Sound and multimedia

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
LoudspeakerSupportedStereo sound with dual speakers
Active noise cancellation2 microphones or more2 microphones or more
RadioFM (RDS)FM
TVDigital TVNot supported
Video formatsMP4, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
USBMicroUSB 2.0, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
Audio output3.5mm jack3.5mm jack
TV outputNot supportedUSB Type-C (reversible)
Bluetooth4.2 + A2DP5.0 + A2DP/LE
WiFi802.11 b/g/n [wifi4] (2.4GHz)
WiFi Direct, hotspot
802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFCSupportedSupported
Infrared portNot supportedNot supported

🧭 Sensors

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
SensorsAccelerometer
Ambient light sensor
Compass
Fingerprint sensor (rear-mounted)
Proximity sensor
Accelerometer
Ambient light sensor
Compass
Face unlock 2D
Fingerprint sensor (under display)
Gyroscope
Hall effect
Vibrating alertSupportedSupported

🔋 Battery

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Battery typeLi-Ion: lithium-ion (Removable)LiPo: li-ion polymer (Non removable)
Battery capacity2800 mAh5000 mAh
Charger, wattsWired charging25W Wired fast charging
Inductive / wireless chargingfeature not registeredNot supported
Talk time autonomy9 hours35 hours (1.5 days)
Standby390 hours (16.3 days)feature not registered

➕ Other features

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot 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: Awesome Black, White, Violet, Blue

☢️ Radiation rate

LG X400 (K121K)Galaxy A72 (SM-A725M/DS)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
X

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