LG X400 (K121L) vs TCL 20 SE (T671O)
Side by side comparison between LG X400 vs TCL 20 SE 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
6.82"
IPS
IPS
720x1640
48
MP
MP
13mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? TCL 20 SE (T671O)
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!
7 Advantages 
16 Advantages | 27 Common items in both devices |
| Until 256GB microSD, microSDXC |
| Plastic body, glass front |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| +20 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 (K121L) | TCL 20 SE (T671O) | |
| Model | X400 (K121L) | TCL 20 SE (T671O) |
| Other model names | LG U+ X400, LGM-K121L, LGMK121L (LG Uplus) | TCL 20 SE T671O-2AAZUS11, T671O-2BAZUS11 |
| Country or region available |  South Korea |  USA |
| Brand | LG | TCL |
| Release date | 2/1/2017 | 4/26/2021, Announced: 1/11/2021 |
| Depth | 8 millimeters (0.31 inches) | 9.1 millimeters (0.36 inches) |
| Size (width x height) | 75.29 x 148.7 millimeters (2.96 x 5.85 in) | 77.14 x 172.08 millimeters (3.04 x 6.77 in) |
| Weight | 142 grams (4.97 ounces) | 206 grams (7.21 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5.3" inches | 6.82" inches |
| Screen-to-body ratio | ~69.2% (screen-to-body ratio) | ~83.2% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 720x1640 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 277 PPI | 263 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 450nits[typ] |
🤖 Operating System | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| System version | Android 7.0 Nougat | Android 11 |
| Firmware update | Android 8.0 Oreo | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| Chipset | 64bit: MediaTek MT6750 (28nm) | 64bit: Qualcomm Snapdragon 460 (SM4250) (11nm) |
| CPU | Octa-core, 2 processors: 4x 1.5GHz ARM Cortex-A53 (Quad-core) 4x 1GHz ARM Cortex-A53 (Quad-core) | Octa-core, 2 processors: 4x 1.8GHz Kryo 240 (Quad-core) 4x 1.6GHz Kryo 240 (Quad-core) |
| GPU graphical controller | ARM Mali-T860 MP2 520Mhz | Qualcomm Adreno 610 (600MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 146080 (v9) Geekbench: 814 (v5.4) |
💽 Memory and storage | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| RAM memory | 2GB LPDDR3 | 4GB LPDDR3 |
| Internal storage | 32GB (22GB available) | 128GB (104GB available) eMMC 5.1 |
| External storage | Until 256GB microSD, microSDXC (dedicated slot) | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| 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 | 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 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat6 850/900/1800/2100/2600 (Bands 1,3,5,7,8) VoLTE | LTE Cat4 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 66) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| 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 (K121L) | TCL 20 SE (T671O) | |
| Back camera (main camera) | 13 megapixels | (quad camera) 48 megapixels 5MP ultrawide f/2.214mm115°1/5"1.12µm 2MP depth f/2.4 2MP macro f/2.4 |
| Main camera resolution | 4160x3120 pixels | 8000x6000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/2.2 (aperture) | f/1.8 (aperture) |
| Focal length | feature not registered | 27mm (lens) |
| Sensor size | 1/3" inches | 1/2" inches |
| Pixel size | 1.12µm pixel | 1.12µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital 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 (K121L) | TCL 20 SE (T671O) | |
| 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/2.2 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | 1/5" inches | 1/3" inches |
| Pixel size | 1.12µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| 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.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| 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 | USB Type-C (reversible) |
| Bluetooth | 4.2 + A2DP | 5.0 + A2DP/LE |
| 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, GALILEO, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 2800 mAh | 5000 mAh |
| Charger, watts | Wired charging | 18W Wired fast charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 9 hours | feature not registered |
| Standby | 390 hours (16.3 days) | feature not registered |
➕ Other features | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| 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: Nuit Black, Aurora Green • TCL UI 3 • 2.5D screen • Dual speakers stereo • 24-bit/192kHz audio |
☢️ Radiation rate | ||
| LG X400 (K121L) | TCL 20 SE (T671O) | |
| 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 |