LG K31 (K300QM6) vs LG K51 (K500QM5)
Side by side comparison between LG K31 vs LG K51 phones, differences, pros, cons and full specifications. What's the better?
,
5.7"
IPS
IPS
720x1520
13
MP
MP
5mp
2GB
RAM
RAM
Octa-core
3000
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 K51 (K500QM5)
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!
2 Advantages 
15 Advantages | 30 Common items in both devices |
| 2GHz 64bit Octa-core (12nm) |
| 32GB (17GB available) / 32GB (16GB available) |
| eMMC 5.1 |
| Until 512GB microSD, microSDXC / Until 1TB microSD, microSDXC |
| Plastic body, glass front |
| TFT IPS LCD |
| 60Hz |
| +23 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 K31 (K300QM6) | LG K51 (K500QM5) | |
| Model | K31 (K300QM6) | K51 (K500QM5) |
| Other model names | LG K31 (Spectrum Mobile), LMK300QM6ARCHSV, LM-K300QM6 | LG K51 (Xfinity Mobile) LMK500QM5ACSTTN, LM-K500QM5 |
| Country or region available |  USA | USA |
| Brand | LG | LG |
| Release date | 8/21/2020 | 4/2/2020 |
| Depth | 8.6 millimeters (0.34 inches) | 8.47 millimeters (0.33 inches) |
| Size (width x height) | 71.12 x 147.83 millimeters (2.8 x 5.82 in) | 77.92 x 166.96 millimeters (3.07 x 6.57 in) |
| Weight | 146 grams (5.11 ounces) | 204 grams (7.14 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | 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 K31 (K300QM6) | LG K51 (K500QM5) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5.7" inches | 6.5" inches |
| Screen-to-body ratio | ~77.1% (screen-to-body ratio) | ~79.7% (screen-to-body ratio) |
| Display resolution | 720x1520 pixels (19:9) | 720x1560 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 295 PPI | 264 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Panda King Glass | Panda King Glass |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| System version | Android 10 | Android 10 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| Chipset | 64bit: MediaTek Helio P22 (MT6762) (12nm) | 64bit: MediaTek Helio P22 (MT6762) (12nm) |
| CPU | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | PowerVR GE8320 (650MHz) | PowerVR GE8320 (650MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| RAM memory | 2GB LPDDR3 | 3GB LPDDR3 |
| Internal storage | 32GB (17GB available) eMMC 5.1 | 32GB (16GB available) eMMC 5.1 |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG K31 (K300QM6) | 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 | 150/50 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 Cat4 (2, 4, 5, 12, 13, 66) | 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+, LTE | 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 K31 (K300QM6) | LG K51 (K500QM5) | |
| Back camera (main camera) | (dual camera) 13 megapixels 5MP ultrawide f/2.2120°1/5.0"1.12µm | (triple camera) 13 megapixels 5MP ultrawide f/2.21.12μm1/5"115° 2MP depth f/2.41.75μm1/5"85° |
| Main camera resolution | 4128x3096 pixels | 4128x3096 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 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 | 26mm lens |
| Sensor size | 1/3.1" inches | 1/3" inches |
| Pixel size | 1.12µm pixel | 1.12µm pixel |
| Autofocus | PDAF: phase detection 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 on both cameras | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| 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/2.2 (aperture) | f/2.0 (aperture) |
| Focal length | 24mm lens | feature not registered |
| Sensor size | 1/5" inches | 1/3" inches |
| Pixel size | 1.12µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| Loudspeaker | Supported | 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 K31 (K300QM6) | LG K51 (K500QM5) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| Sensors | Accelerometer Fingerprint sensor (rear-mounted) | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3000 mAh | 4000 mAh |
| Charger, watts | Wired charging | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 11 hours | 21 hours |
| Standby | 528 hours (22 days) | 576 hours (24 days) |
➕ Other features | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| 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: Silver • LG UX 9.1 | • Colors: Titan gray • Google Assistant • DTS:X 3D sound surround • HAC M3/T3 |
☢️ Radiation rate | ||
| LG K31 (K300QM6) | LG K51 (K500QM5) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.61W/kg (head), 1.13W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |