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Samsung Galaxy Mega 6.3 vs Oppo A3x 128GB

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 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 167.6 x 88 x 8 mm 165.8 x 76.1 x 7.7 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 199 g 186 g  
Display Type SC-LCD capacitive touchscreen, 16M colors, TouchWiz UI IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 1000 nits (HBM)  
Display Size 720 x 1280 pixels, 6.3 inches, 6.67 Inches   720 x 1604 Pixels (~264 PPI)  
Multitouch Yes
Protection Panda Glass  
Memory 8 GB built-in 128GB Built-in, 4GB RAM, eMMC 5.1  
Card slot microSD card (supports up to 64GB) microSDXC  
RAM 1.5 GB RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 a/b/g/n/ac Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v4.0 with A2DP v5.0 with A2DP, LE  
USB USB USB Type-C 2.0, OTG  
NFC No  
GPS Yes Yes + A-GPS support, & GLONASS, BDS, GALILEO  
Main Camera 8MP, 3264 x 2448 pixels, autofocus, LED flash, geo-tagging, touch focus, face & smile detection, HDR, panorama, Video (1080p@30fps), 2ndary (1.9 MP) Dual Camera: 8 MP, f/2.0, (wide), PDAF + Auxiliary lens, LED Flash   HDR, panorama, Video (1080p@30/60fps)  
Front Camera 5 MP, f/2.2, (wide), Video (1080p@30fps)  
OS Android OS, v4.2.2 (Jelly Bean) Android 14 OS  
Chipset GP Qualcomm Snapdragon 6s Gen 1  
Processor Dual-core 1.7 GHz Krait, Qualcomm Snapdragon 400 Chipset Octa Core  
GPU GPU Adreno 610  
Sensors Accelerometer, gyro, proximity, compass Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5 HTML5  
Sound 3.5mm audio jack, MP4/WMV/H.264/H.263 player, MP3/WAV/eAAC+/AC3/FLAC player, SNS integration, TV-out (via MHL A/V link), YouTube, Google Talk, Picasa integration, Games (built-in + downloadable) 3.5mm Audio Jack, Speaker Phone  
Colors White, Black, Plum Purple Nebula Red, Ocean Blue  
Battery Stand-by Up to 420 h Music Play Up to 82 h (Non removable), 5100 mAh   - Fast battery 45W wired, PD2.0, PPS, 50% in 30 min (advertised)  
StandBy Time Stand-by Up to 420 h Music Play Up to 82 h
Misc GPS + A-GPS support & GLONASS, GPU, Active noise cancellation with dedicated mic, Document editor (Word, Excel, PowerPoint, PDF), Google Search, Maps, Gmail, Voice memo/dial/commands, Predictive text input (Swype), YouTube, Calendar, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant MIL-STD-810H compliant*, * does not guarantee ruggedness or use in extreme conditions, Document editor, Photo/video editor