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Samsung Galaxy A15 (SM-A155F/DSN 128GB/6GB) vs LG X400 (K121K)

Side by side comparison between Samsung Galaxy A15 vs LG X400 phones, differences, pros, cons and full specifications. What's the better?

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Compare LG X400 X Samsung Galaxy A15 (SM-A155F/DSN 128GB/6GB) 20Points
6.5"
AMOLED

1080x2340

50
MP

13mp

6GB
RAM

Octa-core

5000
mAh

(Non removable)

vs
5.3"
IPS

720x1280

13
MP

5mp

2GB
RAM

Octa-core

2800
mAh

(Removable)

What's the better phone? Samsung Galaxy A15 (SM-A155F/DSN 128GB/6GB)

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!

Galaxy A15 (SM-A155F/DSN 128GB/6GB)} 20 Advantages Samsung Galaxy A15 (SM-A155F/DSN 128GB/6GB) vs X400 (K121K)} 5 Advantages LG X400 (K121K)
+2.2GHz 64bit Octa-core (6nm)85%
More powerful processor, you can open your applications faster
vs1.5GHz 64bit Octa-core
+6GB LPDDR4X2 times
More RAM memory. Typically more responsive and better for multitasking.
vs2GB LPDDR3
+128GB (108GB available)4 times
More internal storage for applications and files
vs32GB (22GB available)
+Until 1TB microSD, microSDXC3 times
More external storage for files using memory cards
vsUntil 256GB microSD, microSDXC
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT IPS LCD
+1080x2340 pixels174%
Higher resolution screen
vs720x1280 pixels
+396 PPI43%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs277 PPI
+6.5"23%
Larger screen
vs5.3"
+(triple camera) 50MP + 5MP + 2MP3 times
Higher resolution main camera
vs(back) 13MP
+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
vsNot supported
+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
vsHDR photo only main camera
+f/1.8 (aperture)22%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.2 (aperture)
+(front) 13MP160%
Higher resolution secondary camera to take pictures and selfies
vs(front) 5MP
+Android 14Advantage
Android 14 is newer and safer
vsAndroid 8.0 Oreo
+Face unlockAdvantage
Sensors help you use the device
vsNot supported
+5000 mAh79%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs2800 mAh
+2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)Advantage
You can have more mobile carriers/operators on the same device.
vs1 slot (Single-SIM)
(dedicated slot)
+802.11 a/b/g/n/ac [wifi5]Advantage
WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
vs802.11 b/g/n [wifi4]
+5.3 + A2DP/LEAdvantage
Bluetooth 5.3 + A2DP/LE is newer and faster
vs4.2 + A2DP
+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.
vsMicroUSB 2.0, USB OTG On-The-Go
200 grams (7 ounces)vs+142 grams (4.97 ounces)41%
Lighter
8.4 millimeters (0.33 inches)vs+8 millimeters (0.31 inches)5%
Thinner
Virtual proximity sensorvs+Proximity sensorAdvantage
Sensors help you use the device
LiPo: li-ion polymer (Non removable)vs+Li-Ion: lithium-ion (Removable)Advantage
Removable battery can be replaced easily
Not supportedvs+Digital TVAdvantage
Watch your favorite TV shows anywhere

26 Common items in both devices
Plastic body, glass front
16 million
LED flash
Only digital zoom
Autofocus
EIS: Digital stabilization
Full HD (1920x1080)
+19 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

๐Ÿ“ฑ Model features

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
ModelGalaxy A15 (SM-A155F/DSN 128GB/6GB)X400 (K121K)
Other model namesGalaxy A15 4G LTE SM-A155F/Dual-SIM NFCKT LG X400, LGM-K121K, LGMK121K (Korea Telecom)
Country or region available(Global, International)Turkey
(Global, International), Turkey
South Korea
South Korea
BrandSamsungLG
Release date12/16/2023, Announced: 12/11/20232/1/2017
Depth8.4 millimeters (0.33 inches)8 millimeters (0.31 inches)
Size (width x height)76.8 x 160.1 millimeters (3.02 x 6.3 in)75.29 x 148.7 millimeters (2.96 x 5.85 in)
Weight200 grams (7 ounces)142 grams (4.97 ounces)
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersNot supportedNot supported

๐Ÿ“ฒ Display

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Display typeSuper AMOLEDTFT IPS LCD
Screen size6.5" inches5.3" inches
Screen-to-body ratio~84.3% (screen-to-body ratio)~69.2% (screen-to-body ratio)
Display resolution1080x2340 pixels (19.5:9)720x1280 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)396 PPI277 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Refresh rate90Hzfeature not registered
Display features800nits[peak]feature not registered

๐Ÿค– Operating System

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
System versionAndroid 14Android 7.0 Nougat
Firmware updatefeature not registeredAndroid 8.0 Oreo
User InterfaceOne UI 6.1feature not registered

โš™๏ธ Processor

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Chipset64bit: MediaTek Helio G99 (6nm)64bit: MediaTek MT6750 (28nm)
CPUOcta-core, 2 processors:
2x 2.2GHz ARM Cortex-A76 (Dual-core)
6x 2GHz ARM Cortex-A55 (Hexa-core)
Octa-core, 2 processors:
4x 1.5GHz ARM Cortex-A53 (Quad-core)
4x 1GHz ARM Cortex-A53 (Quad-core)
GPU graphical controllerARM Mali-G57 MC2ARM Mali-T860 MP2 520Mhz
Performance (benchmark)AnTuTu: 317085 (v9), 375321 (v10)
Geekbench: 1928 (v5), 1936 (v6)
feature not registered

๐Ÿ’ฝ Memory and storage

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
RAM memory6GB LPDDR4X2GB LPDDR3
Internal storage128GB (108GB available)
eMMC 5.1
32GB (22GB available)
External storageUntil 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)
Until 256GB microSD, microSDXC
(dedicated slot)

๐Ÿ“ถ Mobile networks

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Dual-SIMDual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
Not supported
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
1 slot (Single-SIM)
nano-SIM (4FF)
Maximum Download / Upload300/150 Mbps300/50 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Tri-Band 900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 900/1800/1900
Primary 3G networkUMTS 850/900/2100UMTS 2100
Primary 4G networkLTE Cat7 (1, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
LTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8)
VoLTE
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900Not supported
Secondary 3G networkUMTS 850/900/2100Not supported
Secondary 4G networkLTE Cat7 (1, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41)
VoLTE
Not supported
Secondary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-ANot supported

๐Ÿ“ท Camera

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Back camera (main camera)(triple camera)
50 megapixels
5MP ultrawide f/2.2
2MP macro f/2.4
13 megapixels
Main camera resolution8160x6120 pixels4160x3120 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)f/2.2 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registered1/3" inches
Pixel sizefeature not registered1.12ยตm pixel
AutofocusAutofocusAutofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorSupportedNot supported
HDRHDR photo on both camerasHDR photo only main camera
Camera extras1080p@30fps
720p@120fps (slow motion)
feature not registered

๐Ÿ“ธ Front camera

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Front camera (secondary)13 megapixels5 megapixels
Front camera resolution4128x3096 pixels2560x1920 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashNot supportedNot supported
Focal aperturef/2.0 (aperture)f/2.4 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registered1/5" inches
Pixel sizefeature not registered1.12ยตm pixel

๐Ÿ”‰ Sound and multimedia

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
LoudspeakerMono sound (not stereo)Supported
Active noise cancellation2 microphones or more2 microphones or more
RadioFM (RDS)FM (RDS)
TVNot supportedDigital TV
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

๐Ÿ”Œ Connectivity

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
USBUSB 2.0 Type-C, USB OTG On-The-GoMicroUSB 2.0, USB OTG On-The-Go
Audio output3.5mm jack3.5mm jack
TV outputUSB Type-C (reversible)Not supported
Bluetooth5.3 + A2DP/LE4.2 + A2DP
WiFi802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
802.11 b/g/n [wifi4] (2.4GHz)
WiFi Direct, hotspot
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSSA-GPS, GeoTagging, GLONASS
NFCSupportedSupported
Infrared portNot supportedNot supported

๐Ÿงญ Sensors

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
SensorsAccelerometer
Ambient light sensor
Compass
Face unlock
Fingerprint sensor (side-mounted)
Virtual proximity sensor
Accelerometer
Ambient light sensor
Compass
Fingerprint sensor (rear-mounted)
Proximity sensor
Vibrating alertSupportedSupported

๐Ÿ”‹ Battery

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Battery typeLiPo: li-ion polymer (Non removable)Li-Ion: lithium-ion (Removable)
Battery capacity5000 mAh2800 mAh
Charger, watts25W Wired fast chargingWired charging
Inductive / wireless chargingNot supportedfeature not registered
Talk time autonomy51 hours (2.1 days)9 hours
Standbyfeature not registered390 hours (16.3 days)

โž• Other features

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
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
Miscellaneousโ€ข Colors: Brave Black, Optimistic Blue, Magical Blue, Personality Yellowโ€ข Colors: Black, Gold
โ€ข 2.5D Arc Glass screen
โ€ข LG UX 5.0
โ€ข Wide-angle 120ยฐ front camera
โ€ข KnockOn, Knock Code
โ€ข DMB-TV (Korea)

โ˜ข๏ธ Radiation rate

Galaxy A15 (SM-A155F/DSN 128GB/6GB)LG X400 (K121K)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)0.42W/kg (head), 1.29W/kg (body)feature not registered
X

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