LG G8 ThinQ (G820QM5) vs LG K51 (K500QM5)
Side by side comparison between LG G8 ThinQ vs LG K51 phones, differences, pros, cons and full specifications. What's the better?
,
6.1"
POLED
POLED
1440x3120
12
MP
MP
8mp
6GB
RAM
RAM
Octa-core
3500
mAh
mAh
(Non removable)
vs
6.5"
IPS
IPS
720x1560
13
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? LG G8 ThinQ (G820QM5)
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 
3 Advantages | 25 Common items in both devices |
| Until 1TB microSD, microSDXC |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF on back camera and autofocus front camera / PDAF: phase detection autofocus |
| HDR photo/video and HDR photo on front camera / 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 G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Model | LG G8 ThinQ (G820QM5) | K51 (K500QM5) |
| Other model names | Xfinity Mobile LG G8 ThinQ, LMG820QM5, LM-G820QM5 | LG K51 (Xfinity Mobile) LMK500QM5ACSTTN, LM-K500QM5 |
| Country or region available |  USA | USA |
| Brand | LG | LG |
| Release date | 4/11/2019, Announced: 2/24/2019 | 4/2/2020 |
| Depth | 8.4 millimeters (0.33 inches) | 8.47 millimeters (0.33 inches) |
| Size (width x height) | 71.882 x 151.892 millimeters (2.83 x 5.98 in) | 77.92 x 166.96 millimeters (3.07 x 6.57 in) |
| Weight | 167 grams (5.85 ounces) | 204 grams (7.14 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 G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Display type | P-OLED | TFT IPS LCD |
| Screen size | 6.1" inches | 6.5" inches |
| Screen-to-body ratio | ~83.7% (screen-to-body ratio) | ~79.7% (screen-to-body ratio) |
| Display resolution | 1440x3120 pixels (19.5:9) | 720x1560 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 563 PPI | 264 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 5 | Panda King Glass |
| Refresh rate | 60Hz | 60Hz |
| Display features | HDR10 100% DCI-P3 Always-On Display | Not supported |
🤖 Operating System | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| System version | Android 9.0 Pie | Android 10 |
| Firmware update | Android 12 | feature not registered |
| User Interface | LG UX 8.0 / 9.0 / 10 / 11 | feature not registered |
⚙️ Processor | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Chipset | 64bit: Qualcomm Snapdragon 855 (SM8150) (7nm) | 64bit: MediaTek Helio P22 (MT6762) (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 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 640 (585MHz) | PowerVR GE8320 (650MHz) |
| Performance (benchmark) | AnTuTu: 331537 (v7), 362730 (v8) Geekbench: 10735 (v4.4), 2700 (v5.1) GFXBench: 20fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| RAM memory | 6GB LPDDR4X | 3GB LPDDR3 |
| Internal storage | 128GB (104GB available) UFS 2.1 | 32GB (16GB available) eMMC 5.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| 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 | 1600/150 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 | CDMA 800/1900, GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat19 (2, 3, 4, 5, 7, 13, 20, 28, 66) TD-LTE (46, 48) | LTE Cat6 (2, 3, 4, 5, 7, 12, 13, 20, 66) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, 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 G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Back camera (main camera) | (dual camera) 12 megapixels 16MP ultrawide f/1.91/3.1"16mm1.0µmFF | (triple camera) 13 megapixels 5MP ultrawide f/2.21.12μm1/5"115° 2MP depth f/2.41.75μm1/5"85° |
| Main camera resolution | 4000x3000 pixels | 4128x3096 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.5 (aperture) | f/1.8 (aperture) |
| Focal length | 27mm lens | 26mm lens |
| Sensor size | 1/2.6" inches | 1/3" inches |
| Pixel size | 1.4µm pixel | 1.12µm pixel |
| Autofocus | PDAF on back camera and autofocus front camera | 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/video and HDR photo on front camera | HDR photo on both cameras |
| Camera extras | 1080p@30/60fps 720p@240fps | feature not registered |
📸 Front camera | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Front camera (secondary) | (dual front camera) 8 megapixels 0.3MP TOF f/1.4 | 13 megapixels |
| Front camera resolution | 3264x2448 pixels | 4128x3096 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/1.7 (aperture) | f/2.0 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/3.6" inches | 1/3" inches |
| Pixel size | 1.22µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Loudspeaker | Mono sound (not stereo) 32-bit/192kHz DTS:X | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | 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 G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| 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/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (rear-mounted) Gesture Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3500 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 | 22 hours | 21 hours |
| Standby | 412 hours (17.2 days) | 576 hours (24 days) |
➕ Other features | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| Call control | Voice dialing, Voice recorder | 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: Aurora Black | • Colors: Titan gray • Google Assistant • DTS:X 3D sound surround • HAC M3/T3 |
☢️ Radiation rate | ||
| LG G8 ThinQ (G820QM5) | LG K51 (K500QM5) | |
| 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 |