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Oppo Neo 3 vs Tecno Spark 40

2G Network Sim1: 850 / 900 / 1800 / 1900 Sim2: 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  Best smartphone
3G Network WCDMA 2100MHz HSDPA 900 / 2100  
4G Network LTE  
Dimensions 132 X 65.8 x 9.2mm 165.6 x 77 x 7.7 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 128 g N/A  
Display Type FWVGA IPS Display IPS LCD Capacitive Touchscreen   120Hz  
Display Size 4.5 Inches, 854 x 480 pixels 6.67 Inches   1080 x 2460 Pixels (~403 PPI)  
Memory 4GB built-in 128/256GB Built-in, 4/6/8GB RAM  
Card slot microSD card (supports up to 32GB) microSDXC  
RAM 1 GB RAM
GPRS Yes
WLAN WLAN (WIFI 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v2.1 v5.4 with A2DP, LE  
USB USB USB Type-C  
NFC No  
GPS Yes Yes + A-GPS support  
Main Camera 5MP, autofocus, LED flash, Geo-tagging, touch focus, face detection, Video, 2ndary (2MP) Single Camera: 50 MP, (wide), PDAF Auxiliary lens, Dual LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 8 MP, (wide), Dual LED Flash, Video (1080p@30fps)  
OS Android 4.2 Android 15 OS  
Chipset Mediatek Helio G81 (12 nm)  
Processor 1.3GHZ Dual-Core Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU Mali-G52 MC2  
Sensors proximity, light sensor, G-sensor, Accelerometer Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML 5 HTML5  
Sound 3.5mm audio jack, MP4/WMV/H.264/H.263 player, MP3/AAC/WMA/WAV player, SNS integration, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone  
Colors White Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery 1900mAh 5200 mAh   - Fast battery 45W wired, 55 min to 100%  
Misc GPS + A-GPS support, MicroSIM card support only, Face Unlock, Google Search, Maps, Gmail, Youtube, Calendar, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m