LG K51 (K500UMT) vs LG Optimus 4X HD (P880)
Side by side comparison between LG K51 vs LG Optimus 4X HD phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
IPS
IPS
720x1560
13
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
4.7"
IPS
IPS
720x1280
8
MP
MP
1.3mp
1GB
RAM
RAM
Quad-core
2150
mAh
mAh
(Removable)
What's the better phone? LG K51 (K500UMT)
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!
18 Advantages 
5 Advantages | 21 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| Full HD (1920x1080) |
| Capacitive |
| +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 K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Model | K51 (K500UMT) | Optimus 4X HD (P880) |
| Other model names | LG K51 (Verizon) LMK500UMTAVRZTN, LM-K500UMT | LG Optimus 4X HD, LG P880, LG X3 |
| Country or region available |  USA | feature not registered |
| Brand | LG | LG |
| Release date | 5/1/2020 | 6/11/2012 |
| Depth | 8.47 millimeters (0.33 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 77.92 x 166.96 millimeters (3.07 x 6.57 in) | 68.1 x 132.4 millimeters (2.68 x 5.21 in) |
| Weight | 204 grams (7.14 ounces) | 133 grams (4.66 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
📲 Display | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 6.5" inches | 4.7" inches |
| Screen-to-body ratio | ~79.7% (screen-to-body ratio) | ~67.5% (screen-to-body ratio) |
| Display resolution | 720x1560 pixels (19.5:9) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 264 PPI | 312 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Panda King Glass | Gorilla Glass |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| System version | Android 10 | Android 4.0.3 Ice Cream Sandwich ICS |
| Firmware update | feature not registered | Android 4.1.2 Jelly Bean |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Chipset | 64bit: MediaTek Helio P22 (MT6762) (12nm) | 32bit: NVIDIA Tegra 3 AP30H |
| CPU | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor: 4x 1.5GHz ARM Cortex-A9 (Quad-core) |
| GPU graphical controller | PowerVR GE8320 (650MHz) | NVIDIA GeForce |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| RAM memory | 3GB LPDDR3 | 1GB LPDDR2 |
| Internal storage | 32GB (18GB available) eMMC 5.1 | 16GB (12GB available) |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 64GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 300/50 Mbps | 21/5.76 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| 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 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat6 (2, 3, 4, 5, 7, 12, 13, 20, 66) | Not supported |
| 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, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
| 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 K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Back camera (main camera) | (triple camera) 13 megapixels 5MP ultrawide f/2.21.12μm1/5"115° 2MP depth f/2.41.75μm1/5"85° | 8 megapixels |
| Main camera resolution | 4128x3096 pixels | 3264x2448 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) | feature not registered |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | feature not registered |
| Image stabilization | EIS: Digital stabilization | feature not registered |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection |
| BSI sensor | Not supported | feature not registered |
| HDR | HDR photo on both cameras | feature not registered |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Front camera (secondary) | 13 megapixels | 1.3 megapixels |
| Front camera resolution | 4128x3096 pixels | 1280x1024 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | feature not registered |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, DivX, Xvid, H.264, H.263, WMV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Micro-B USB MHL |
| Bluetooth | 5.0 + A2DP/LE | 4.0 + A2DP |
| 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) |
| DLNA | Not supported | feature not registered |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging |
| NFC | Not supported | Supported |
| Infrared port | Not supported | feature not registered |
🧭 Sensors | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4000 mAh | 2150 mAh |
| Charger, watts | 10W (5V/2A) Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 21 hours | 10.9 hours |
| Standby | 576 hours (24 days) | 686 hours (28.6 days) |
➕ Other features | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| 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, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Titan gray • Google Assistant • DTS:X 3D sound surround • HAC M3/T3 | • Colors: Black, White • LG Optimus UI 3.0 • Touch focus • DLNA • Wi-Fi hotspot Java framework |
☢️ Radiation rate | ||
| LG K51 (K500UMT) | LG Optimus 4X HD (P880) | |
| 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 |