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Samsung Galaxy Star Trios vs Oppo A18 128GB

2G Network Sim 1: 850 / 900 / 1800 / 1900Sim 2: 850 / 900 / 1800 / 1900Sim 3: 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 2100 HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 106 x 61 x 11 mm 163.7 x 75 x 8.2 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 105 g 188 g  
Display Type TFT capacitive touchscreen, 256K colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)  
Display Size 240 x 320 pixels, 3.14 inches (~127 ppi pixel density) 6.56 Inches   720 x 1612 Pixels (~269 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass  
Memory 4GB built-in 128GB Built-in, 4GB RAM (+4GB virtual RAM)  
Card slot microSD card(supports up to 32GB) microSDXC  
RAM 512 MB RAM
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v4.0 v5.3 with A2DP, LE, aptX  
USB USB V2.0 USB Type-C 2.0, OTG  
NFC No  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera 2 MP, 1600 x 1200 pixels, Geo-tagging, Video (VGA) Dual Camera: 8 MP, f/2.0, (wide), AF + 2 MP, f/2.4, (depth, LED Flash   Geo-tagging, touch focus, face detection, panorama, HDR, Video (1080p@30fps)  
Front Camera 5 MP, f/2.2, (wide), Panorama, Video (1080p@30fps)  
OS Android OS, v4.1.2 (Jelly Bean) Android 13 OS  
Chipset GPU: Adreno 20 Mediatek MT6769 Helio G85 (12nm)  
Processor 1 GHz Cortex-A5, Qualcomm MSM7225A Snapdragon Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU GPU: Adreno 200 Arm Mali-G52  
Sensors Accelerometer, compass Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML HTML5  
Sound Stereo FM radio, 3.5mm audio jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, YouTube, Google Talk, SNS integration, Games (built-in + downloadable) 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone  
Colors Black, White Glowing Black, Glowing Blue  
Battery 1300mAh (Li-Po Non removable), 5000 mAh  
Misc Tripple SIM, Document viewer, Google Search, Maps, Gmail, Calendar, Picasa integration, Image/video editor, Organizer, Predictive text input SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant, Photo/video editor, Document viewer