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Samsung Galaxy Ace 4 vs Oppo A18 128GB

2G Network GSM 850 / 900 / 1800 / 1900 SIM 2: 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 900 / 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 121.4 x 62.9 x 10.8 mm 163.7 x 75 x 8.2 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 123.8 g 188 g  
Display Type TFT capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)  
Display Size 480 x 800 pixels, 4.0 inches (~233 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 with A2DP v5.3 with A2DP, LE, aptX  
USB USB (microUSB v2.0) USB Type-C 2.0, OTG  
NFC No  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera 5 MP, 2592 x 1944 pixels, autofocus, LED flash, Geo-tagging, face and smile detection, panorama, Video (720p@30fps), 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 VGA 5 MP, f/2.2, (wide), Panorama, Video (1080p@30fps)  
OS Android OS, v4.4.2 (KitKat) Android 13 OS  
Chipset Mediatek MT6769 Helio G85 (12nm)  
Processor 1.0 GHz Dual-Core Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Arm Mali-G52  
Sensors Accelerometer Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML 5 HTML5  
Sound Stereo FM radio, 3.5mm audio jack, MP4/WMV/H.264 player, MP3/WAV/eAAC+ player, YouTube, Google Talk, Image/video editor, SNS integration, Games (built-in + downloadable) 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone  
Colors Iris Charcoal, Classic White Glowing Black, Glowing Blue  
Battery 1500mAh (Li-Po Non removable), 5000 mAh  
Misc Document viewer, Google Search, Maps, Gmail, Calendar, Picasa, 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