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LG Optimus 4X HD P880 vs Oppo Reno 15

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 800 / 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
5G Network SA/NSA  
Dimensions 132.4 x 68.1 x 8.9 mm 158 x 74.8 x 7.77mm (Twilight Blue), 7.89mm (Aurora White)  
Sim Type Nano-SIM + Nano-SIM + eSIM (max 2 at a time)  
Weight 133 g 197 g  
Display Type True HD-IPS LCD capacitive touchscreen, 16M colors, Multi-touch, Optimus UI v3.0 AMOLED Capacitive Touchscreen, 1B Colors   120Hz, HDR10+, 600 nits (typ), 1200 nits (HBM)  
Display Size 6.59 Inches   1256 x 2760 Pixels (~460 PPI)  
Protection Corning Gorilla Glass 2 Corning Gorilla Glass 7i  
Memory 16 GB built-in 256GB Built-in, 12GB RAM, UFS 3.1  
Card slot No  
RAM 1GB RAM
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 a/b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v4.0 with A2DP v5.4 with A2DP, LE, aptX HD, LHDC 5  
USB USB USB Type-C 2.0, OTG  
NFC Yes  
GPS Yes Yes + GPS, GLONASS, GALILEO, BDS, QZSS  
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, 26mm (wide), PDAF, OIS + 50 MP, f/2.8, 80mm (telephoto), PDAF, OIS, 3.5x optical zoom + 8 MP, f/2.2, 15mm, (ultrawide), 1/4.0", AF, LED Flash   Color spectrum sensor, HDR, panorama, Video (4K@30/60fps, 1080p@30/60/120fps, gyro-EIS, HDR)  
Front Camera 50 MP, f/2.0, 18mm (ultrawide), AF, Panorama, HDR, Video (4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR)  
OS Android OS, v4.0 (Ice Cream Sandwich) Android 16 OS  
Chipset Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm)  
Processor Quad-core 1.5 GHz Cortex-A9, Nvidia Tegra 3 chipset Octa-core (1 x 2.8 GHz Cortex-720 + 4 x 2.4 GHz Cortex-720 + 3 x 1.8 GHz Cortex-520)  
GPU Adreno 722  
Sensors Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity, BeaconLink calls via bluetooth, up to 200m  
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) Speaker Phone  
Colors Black, White Twilight Blue, Aurora White  
Battery Stand-by Up to 730 h 6500 mAh   - Fast battery 80W wired, 80W UFCS, 55W PPS, 13.5W PD, 13.5W QC, 100% in 50 min, Reverse wired  
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   NFC (market/region dependent), Glass front + Gorilla Glass 7i), aluminum frame, glass back, IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)