LG G8X ThinQ (G850UM1) vs LG K51S (K510EMW)
Side by side comparison between LG G8X ThinQ vs LG K51S phones, differences, pros, cons and full specifications. What's the better?
,
6.4"
OLED
OLED
1080x2340
12
MP
MP
32mp
6GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
6.55"
IPS
IPS
720x1600
32
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? LG G8X ThinQ (G850UM1)
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!
25 Advantages 
4 Advantages | 25 Common items in both devices |
| Until 1TB microSD, microSDXC |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| HDR photo on both cameras |
| +18 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 G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Model | G8X ThinQ (G850UM1) | K51S (K510EMW) |
| Other model names | LG G8X ThinQ Dual Screen (AT&T) LM-G850UM1, LMG850UM1AAG3BKY | LG K51s LM-K510EMW, LMK510EMW (Dual-Sim + NFC) |
| Country or region available |  USA |   (Europe), (Global, International) |
| Brand | LG | LG |
| Release date | 11/1/2019, Announced: 9/6/2019 | 4/1/2020 |
| Depth | 8.4 millimeters (0.33 inches) | 8.26 millimeters (0.33 inches) |
| Size (width x height) | 75.8 x 159.3 millimeters (2.98 x 6.27 in) | 76.7 x 165.2 millimeters (3.02 x 6.5 in) |
| Weight | 192 grams (6.72 ounces) | 194 grams (6.79 ounces) |
| Build, materials | Aluminum frame, glass front/back | Plastic body, glass front |
| Protection against water and others | IP68 certified: dust/waterproof over 1.5 meters and 30min. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
📲 Display | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Display type | OLED | TFT IPS LCD |
| Screen size | 6.4" inches | 6.55" inches |
| Screen-to-body ratio | ~83.3% (screen-to-body ratio) | ~81.7% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 403 PPI | 268 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 6 | Not supported |
| Refresh rate | 60Hz | 60Hz |
| Display features | HDR10 Always-On Display DCI-P3 100% | 400nits[typ] |
🤖 Operating System | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| System version | Android 9.0 Pie | Android 9.0 Pie |
| Firmware update | Android 10 | feature not registered |
| User Interface | LG UX 9.0 | feature not registered |
⚙️ Processor | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Chipset | 64bit: Qualcomm Snapdragon 855 (SM8150) (7nm) | 64bit: MediaTek Helio P35 (MT6765) (12nm) |
| CPU | Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (Quad-core) | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 640 (585MHz) | PowerVR GE8320 MP2 (680MHz) |
| Performance (benchmark) | AnTuTu: 339726 (v7), 411980 (v8) Geekbench: 11251 (v4.4), 2870 (v5.1) GFXBench: 38fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| RAM memory | 6GB LPDDR4X | 3GB LPDDR3 |
| Internal storage | 128GB (104GB available) UFS 2.1 | 64GB (47GB available) eMMC 5.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 2000/75 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1700/1900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 12, 14, 20, 29, 30, 66) TD-LTE (38, 39, 40, 41, 46) VoLTE | LTE Cat6 (1, 3, 7, 8, 20) TD-LTE (38) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Back camera (main camera) | (dual camera) 12 megapixels 13MP ultrawide f/2.49mm1.0µm | (quad camera) 32 megapixels 5MP ultrawide f/2.216mm1.12μm115° 2MP macro f/2.422mm1.75μm88.6° 2MP depth f/2.41.75μm |
| Main camera resolution | 4000x3000 pixels | 6528x4896 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 27mm lens | 24mm lens |
| Sensor size | 1/2.55" inches | feature not registered |
| Pixel size | 1.4µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | 4K@30/60fps 1080p@30/60/240fps | feature not registered |
📸 Front camera | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Front camera (secondary) | 32 megapixels | 13 megapixels |
| Front camera resolution | 6528x4896 pixels | 4128x3096 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/1.9 (aperture) | f/2.0 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/2.8" inches | feature not registered |
| Pixel size | 0.8µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Loudspeaker | Stereo sound 32-bit/192kHz Tuned by Meridian | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, 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 G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| USB | USB 3.1 Type-C, 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 | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4000 mAh | 4000 mAh |
| Charger, watts | 21W Wired fast charging Quick Charge 3 USB Power Delivery 2.0 | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | 9W Qi wireless charging | Not supported |
| Talk time autonomy | 30 hours (1.3 days) | 10.5 hours |
| Standby | feature not registered | 370 hours (15.4 days) |
➕ Other features | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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: New Aurora Black • Screen case (foldable) | • Colors: Titanium, Blue, Pink/Red • Silicone case included • Google Assistant (dedicated side button) • DTS:X 3D audio |
☢️ Radiation rate | ||
| LG G8X ThinQ (G850UM1) | LG K51S (K510EMW) | |
| 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 |