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LG Optimus 4X HD P880 vs Xiaomi Redmi 12

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 132.4 x 68.1 x 8.9 mm 168.6 x 76.3 x 8.2 mm  
Sim Type Hybrid Dual SIM, Dual Standby, (Nano-SIM)  
Weight 133 g 198 g  
Display Type True HD-IPS LCD capacitive touchscreen, 16M colors, Multi-touch, Optimus UI v3.0 IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 550 nits (peak)  
Display Size 6.79 Inches   1080 x 2460 Pixels (~396 PPI)  
Protection Corning Gorilla Glass 2 Corning Gorilla Glass  
Memory 16 GB built-in 128GB Built-in, 8GB RAM  
Card slot microSDXC (uses shared SIM slot)  
RAM 1GB RAM
GPRS Yes Yes
EDGE Yes
WLAN WLAN (Wi-Fi 802.11 a/b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct  
BlueTooth Bluetooth v4.0 with A2DP v5.0 with A2DP, LE  
USB USB USB Type-C 2.0, USB On-The-Go  
NFC No  
GPS Yes Yes + A-GPS support & Glonass, BDS  
Main Camera 8MP, 3264x2448 pixels, autofocus, LED flash, Geo-tagging, face and smile detection, photo sphere, image stabilization, Video (30fps), 2ndary 1.3MP Triple Camera: 50 MP, f/1.8, (wide), PDAF + 8 MP, f/2.2, (ultrawide) + 2 MP, f/2.4, (depth), LED Flash   Phase detection, geo-tagging, touch focus, face detection, HDR, panorama, Video (1080p@30fps)  
Front Camera 8 MP, f/2.1, (wide), Video (1080p@30fps)  
OS Android OS, v4.0 (Ice Cream Sandwich) Android 13 OS  
Chipset Mediatek Helio G88 (12nm)  
Processor Quad-core 1.5 GHz Cortex-A9, Nvidia Tegra 3 chipset Octa-core (2x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Mali-G52 MC2  
Sensors Accelerometer, Compass, Fingerprint (side-mounted)  
Browser HTML5, Adobe Flash HTML5  
Sound Stereo FM Radio, 3.5mm jack, DivX/Xvid/MP4/DivX/XviD/H.264/H.263 player, MP3/WAV/WMA/eAAC+ player, Google Search, Maps, Gmail, YouTube, Google Talk, Picasa, Games (built-in) 3.5mm Audio Jack, Speaker Phone  
Colors Black, White Midnight Black, Sky Blue, Polar Silver  
Battery Stand-by Up to 730 h (Li-Po Non removable), 5000 mAh   - Fast charging 18W wired, PD  
StandBy Time Stand-by Up to 730 h
Misc GPS + A-GPS support, SNS integration, Active noise cancellation with dedicated mic, Document viewer (Word, Excel, PowerPoint, PDF), Organizer, Voice memo, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, plastic frame, glass back, IP53, dust and splash resistant, NFC (market dependent), Photo/video editor, Document viewer