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Samsung Galaxy Mega On 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 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE 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 151.8 x 77.5 x 8.2 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 145g 197 g  
Display Type capacitive touchscreen, 16M colors AMOLED Capacitive Touchscreen, 1B Colors   120Hz, HDR10+, 600 nits (typ), 1200 nits (HBM)  
Display Size 5.5 inches 6.59 Inches   1256 x 2760 Pixels (~460 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 7i  
Memory 8GB built-in 256GB Built-in, 12GB RAM, UFS 3.1  
Card slot microSD card (supports up to 64GB) 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 v5.4 with A2DP, LE, aptX HD, LHDC 5  
USB USB (microUSB v2.0) USB Type-C 2.0, OTG  
NFC Yes  
GPS Yes Yes + GPS, GLONASS, GALILEO, BDS, QZSS  
Main Camera 13 MP, autofocus, LED flash, geo-tagging, Video, 2ndary 5 MP 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 5.1.1 (Lollipop) Android 16 OS  
Chipset Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm)  
Processor 1.4 GHZ Quad-Core, Qualcomm's Snapdragon 410 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, proximity Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity, BeaconLink calls via bluetooth, up to 200m  
Browser HTML5 HTML5  
Sound Fm radio (not yet confirmed), 3.5mm audio jack, MP4/WMV/H.264/H.263 player, MP3/WAV/eAAC+/AC3/FLAC player, SNS integration, YouTube, Google Talk, Google map, Picasa integration, Games (built-in + downloadable) Speaker Phone  
Colors Black, white Twilight Blue, Aurora White  
Battery 3000 mAh 6500 mAh   - Fast battery 80W wired, 80W UFCS, 55W PPS, 13.5W PD, 13.5W QC, 100% in 50 min, Reverse wired  
Misc GPS + A-GPS support & GLONASS, Document viewer, Google Search, Maps, Gmail, Voice memo/dial/commands, Predictive text input, YouTube, Calendar, 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)