Samsung Galaxy S24 FE (SM-S721U 256GB) vs LG X400 (K121K)
Side by side comparison between Samsung Galaxy S24 FE vs LG X400 phones, differences, pros, cons and full specifications. What's the better?
,
6.7"
AMOLED
AMOLED
1080x2340
50
MP
MP
10mp
8GB
RAM
RAM
Deca-core
4700
mAh
mAh
(Non removable)
vs
5.3"
IPS
IPS
720x1280
13
MP
MP
5mp
2GB
RAM
RAM
Octa-core
2800
mAh
mAh
(Removable)
What's the better phone? Samsung Galaxy S24 FE (SM-S721U 256GB)
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!
32 Advantages 
7 Advantages | 17 Common items in both devices |
| 8 millimeters (0.31 inches) |
| 16 million |
| LED flash |
| PDAF: phase detection autofocus / Autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| +10 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 | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Model | Galaxy S24 FE (SM-S721U 256GB) | X400 (K121K) |
| Other model names | Galaxy S24 5G SM-S721U1 (Fan Edition) | KT LG X400, LGM-K121K, LGMK121K (Korea Telecom) |
| Country or region available |  USA |  South Korea |
| Brand | Samsung | LG |
| Release date | 10/3/2024, Announced: 9/26/2024 | 2/1/2017 |
| Depth | 8 millimeters (0.31 inches) | 8 millimeters (0.31 inches) |
| Size (width x height) | 77.3 x 162 millimeters (3.04 x 6.38 in) | 75.29 x 148.7 millimeters (2.96 x 5.85 in) |
| Weight | 213 grams (7.46 ounces) | 142 grams (4.97 ounces) |
| Build, materials | Aluminum frame, glass front/back Back: Gorilla Glass 5 | Plastic body, glass front |
| Protection against water and others | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant | Not supported |
📲 Display | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Display type | Dynamic AMOLED | TFT IPS LCD |
| Screen size | 6.7" inches | 5.3" inches |
| Screen-to-body ratio | ~88% (screen-to-body ratio) | ~69.2% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 385 PPI | 277 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass Victus | Not supported |
| Refresh rate | 120Hz | feature not registered |
| Display features | 1900nits[peak] HDR10+ | feature not registered |
🤖 Operating System | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| System version | Android 14 | Android 7.0 Nougat |
| Firmware update | feature not registered | Android 8.0 Oreo |
| User Interface | One UI 6.1 | feature not registered |
⚙️ Processor | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Chipset | 64bit: Samsung Exynos 2400e (4nm) | 64bit: MediaTek MT6750 (28nm) |
| CPU | Deca-core, 4 processors: 1x 3.11GHz ARM Cortex-X4 (Single-core) 2x 2.9GHz ARM Cortex-A720 (Dual-core) 3x 2.59GHz ARM Cortex-A720 (Triple-core) 4x 1.96GHz ARM Cortex-A520 (Quad-core) | Octa-core, 2 processors: 4x 1.5GHz ARM Cortex-A53 (Quad-core) 4x 1GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Samsung Xclipse 940 (1GHz) | ARM Mali-T860 MP2 520Mhz |
| Performance (benchmark) | AnTuTu: 1618176 (v10) Geekbench: 5678 (v6.3) | feature not registered |
💽 Memory and storage | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| RAM memory | 8GB LPDDR5X | 2GB LPDDR3 |
| Internal storage | 256GB (231GB available) UFS 3.1 | 32GB (22GB available) |
| External storage | Not supported | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 5000/1920 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Tri-Band 900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | UMTS 2100 |
| Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 48) VoLTE | LTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8) VoLTE |
| Primary 5G network | SA/NSA/Sub6 (1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 71, 77, 78) mmWave (260, 261) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6, mmWave | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41, 48) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6, mmWave | Not supported |
📷 Camera | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Back camera (main camera) | (triple camera) 50 megapixels 12MP ultrawide f/2.2123° 8MP telephoto f/2.475mmPDAFOIS3x-optical-zoom | 13 megapixels |
| Main camera resolution | 8160x6120 pixels | 4160x3120 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/2.2 (aperture) |
| Focal length | 24mm (lens) | feature not registered |
| Sensor size | feature not registered | 1/3" inches |
| Pixel size | feature not registered | 1.12µm pixel |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Digital and optical zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo/video on both cameras | HDR photo only main camera |
| Camera extras | 8K@24/30fps 4K@30/60fps 1080p@30/60/120/240fps 720p@960fps | feature not registered |
📸 Front camera | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Front camera (secondary) | 10 megapixels | 5 megapixels |
| Front camera resolution | 3872x2592 pixels | 2560x1920 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.4 (aperture) | f/2.4 (aperture) |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | feature not registered | 1/5" inches |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Loudspeaker | Stereo sound Dolby Atmos | Supported |
| Active noise cancellation | 2 microphones | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Digital TV |
| 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 | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| USB | USB 3.2 Type-C, USB OTG On-The-Go | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.3 + A2DP/LE | 4.2 + A2DP |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS, NavIC | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Virtual proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4700 mAh | 2800 mAh |
| Charger, watts | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 | Wired charging |
| Inductive / wireless charging | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging | feature not registered |
| Talk time autonomy | feature not registered | 9 hours |
| Standby | feature not registered | 390 hours (16.3 days) |
➕ Other features | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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: Graphite, Gray, Blue, Mint, Yellow • Samsung DeX | • Colors: Black, Gold • 2.5D Arc Glass screen • LG UX 5.0 • Wide-angle 120° front camera • KnockOn, Knock Code • DMB-TV (Korea) |
☢️ Radiation rate | ||
| Galaxy S24 FE (SM-S721U 256GB) | LG X400 (K121K) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.94W/kg (head), 0.71W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |