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Samsung Galaxy S4 vs Oppo A18 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), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
Available Exp. release 2013, April 26th
Dimensions 163.7 x 75 x 8.2 mm  
Sim Type Micro-SIM Dual Sim, Dual Standby (Nano-SIM)  
Weight 130 g (4.59 oz) 188 g  
Display Type Super AMOLED capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)  
Display Size 1080 x 1920 pixels, 5.0 inches (~441 ppi pixel density) 6.56 Inches   720 x 1612 Pixels (~269 PPI)  
Protection Corning Gorilla Glass  
Memory 16/32/64 GB storage, microSD, up to 64 GB 128GB Built-in, 4GB RAM (+4GB virtual RAM)  
Card slot microSDXC  
RAM 2 GB RAM
GPRS Yes
3G
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Yes, v4.0 with A2DP, EDR, LE v5.3 with A2DP, LE, aptX  
USB Yes, microUSB v2.0 (MHL), USB On-the-go, USB Host USB Type-C 2.0, OTG  
NFC No  
GPS Yes, with A-GPS support and GLONASS Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera 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, v4.2.2 (Jelly Bean) Android 13 OS  
Chipset Mediatek MT6769 Helio G85 (12nm)  
Processor Exynos 5 Octa 5410, Quad-core 1.6 GHz Cortex-A15 & quad-core 1.2 GHz Cortex-A7 Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Arm Mali-G52  
Sensors Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5, Adobe Flash HTML5  
Radio TBD
Sound 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone  
Colors White Frost, Black Mist Glowing Black, Glowing Blue  
Battery Li-Ion 2600 mAh battery (Li-Po Non removable), 5000 mAh  
StandBy Time TBD
TalkTime TBD
Misc SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant, Photo/video editor, Document viewer