LG X400 (K121K) vs Apple iPhone 6S Plus (128GB)
Side by side comparison between LG X400 vs Apple iPhone 6S Plus phones, differences, pros, cons and full specifications. What's the better?
,
5.3"
IPS
IPS
720x1280
13
MP
MP
5mp
2GB
RAM
RAM
Octa-core
2800
mAh
mAh
(Removable)
vs
5.5"
IPS
IPS
1080x1920
12
MP
MP
5mp
2GB
RAM
RAM
Dual-core
2750
mAh
mAh
(Non removable)
What's the better phone? Apple iPhone 6S Plus (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!
9 Advantages 
17 Advantages | 21 Common items in both devices |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| 1/3" inches |
| f/2.2 (aperture) |
| (front) 5MP |
| 4G LTE-A |
| +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) | iPhone 6S Plus (128GB) | |
| Model | X400 (K121K) | iPhone 6S Plus (128GB) |
| Other model names | KT LG X400, LGM-K121K, LGMK121K (Korea Telecom) | iPhone 6s Plus A1634, iPhone 6s Plus A1687 CDMA, iPhone 6s+ |
| Country or region available |  South Korea |  (Global, International) |
| Brand | LG | Apple |
| Release date | 2/1/2017 | 9/25/2015, Announced: 9/9/2015 |
| Depth | 8 millimeters (0.31 inches) | 7.3 millimeters (0.29 inches) |
| Size (width x height) | 75.29 x 148.7 millimeters (2.96 x 5.85 in) | 77.9 x 158.2 millimeters (3.07 x 6.23 in) |
| Weight | 142 grams (4.97 ounces) | 192 grams (6.72 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Display type | TFT IPS LCD | TFT LED-Backlit IPS LCD |
| Screen size | 5.3" inches | 5.5" inches |
| Screen-to-body ratio | ~69.2% (screen-to-body ratio) | ~67.7% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 1080x1920 pixels (16:9) |
| 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 | Sapphire Glass |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| System version | Android 7.0 Nougat | iOS 9.0 |
| Firmware update | Android 8.0 Oreo | iOS 15 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Chipset | 64bit: MediaTek MT6750 (28nm) | 64bit: Apple A9 (APL1022) (16nm) |
| CPU | Octa-core, 2 processors: 4x 1.5GHz ARM Cortex-A53 (Quad-core) 4x 1GHz ARM Cortex-A53 (Quad-core) | Dual-core, 1 processor: 2x 1.84GHz Twister (Dual-core) |
| GPU graphical controller | ARM Mali-T860 MP2 520Mhz | PowerVR GT7600 (6-core, 650MHz) |
| Performance (benchmark) | feature not registered | Basemark OS II: 2261 (2.0) |
💽 Memory and storage | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| RAM memory | 2GB LPDDR3 | 2GB LPDDR4 |
| Internal storage | 32GB (22GB available) | 128GB (114GB available) NVMe (SSD) |
| External storage | Until 256GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 300/50 Mbps | 300/50 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, CDMA 800/1700/1900/2100 |
| Primary 3G network | UMTS 2100 | CDMA2000 TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8) VoLTE | LTE Cat6 A1634 model: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30) TD-LTE (Bands 38, 39, 40, 41) A1687 model: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29) TD-LTE (Bands 38, 39, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Back camera (main camera) | 13 megapixels | 12 megapixels |
| Main camera resolution | 4160x3120 pixels | 4608x2592 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | 29mm lens |
| Sensor size | 1/3" inches | 1/3" inches |
| Pixel size | 1.12µm pixel | 1.22µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | OIS: Optical stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | HDR photo only main camera | HDR photo/video on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Front camera (secondary) | 5 megapixels | 5 megapixels |
| Front camera resolution | 2560x1920 pixels | 2592x1944 pixels |
| Video recording (secondary) | Full HD (1920x1080) | HD (1280x720) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.4 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | 31mm lens |
| Sensor size | 1/5" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Loudspeaker | Supported | Supported |
| 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 | MPEG4, H.264, H.265, MOV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, AAC, eAAC, M4A |
🔌 Connectivity | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go | USB 2.0 proprietary connector |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Proprietary TV-out |
| Bluetooth | 4.2 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, GALILEO, QZSS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Fingerprint sensor (front-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 2800 mAh | 2750 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 9 hours | 24 hours (1 day) |
| Standby | 390 hours (16.3 days) | 384 hours (16 days) |
➕ Other features | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| 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: Silver, Gold, Space Gray, Rose Gold • Oleophobic coating • Touch ID v2 • Simultaneous HD video and image recording • 3D Touch display • FaceTime • Siri natural language • AirDrop file sharing • iCloud cloud service • NFC Apple Pay only (Visa, MasterCard, AMEX) • WiFi hotspot |
☢️ Radiation rate | ||
| LG X400 (K121K) | iPhone 6S Plus (128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.12W/kg (head), 1.14W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.93W/kg (head), 0.98W/kg (body) |