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Nokia C31 vs Oppo A18 128GB

2G Network SIM1: GSM 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 2100   HSDPA 850 / 900 / 2100  
4G Network LTE   LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions N/A   163.7 x 75 x 8.2 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 200 g   188 g  
Display Type IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)  
Display Size 6.8 Inches   1080 x 2400 Pixels (~390 PPI)   6.56 Inches   720 x 1612 Pixels (~269 PPI)  
Protection Corning Gorilla Glass  
Memory 32/64/128GB Built-in, 3/4GB RAM   128GB Built-in, 4GB RAM (+4GB virtual RAM)  
Card slot microSDXC (dedicated slot)   microSDXC  
GPRS Yes
WLAN Wi-Fi 802.11 b/g/n, hotspot   Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth v4.2 with A2DP   v5.3 with A2DP, LE, aptX  
USB microUSB 2.0, USB On-The-Go   USB Type-C 2.0, OTG  
NFC No   No  
GPS Yes + A-GPS support   Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera Triple Camera: 13 MP, (wide), AF + 2 MP, (macro) + 2 MP, (depth), LED Flash   Geo-tagging, touch focus, Video (1080p@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 5 MP   5 MP, f/2.2, (wide), Panorama, Video (1080p@30fps)  
OS Android 12 OS   Android 13 OS  
Chipset Unisoc SC9863A (28nm)   Mediatek MT6769 Helio G85 (12nm)  
Processor Octa-core (4 x 1.6 GHz Cortex-A55 + 4 x 1.2 GHz Cortex-A55)   Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU IMG8322   Arm Mali-G52  
Sensors Accelerometer, Compass, Fingerprint (rear mounted), Proximity   Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/WMA player, Speaker Phone   3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone  
Colors Gray, Blue   Glowing Black, Glowing Blue  
Battery (Li-Po Non removable), 5050 mAh   - Battery charging 10W   (Li-Po Non removable), 5000 mAh  
Misc SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, plastic frame, plastic back, Splash resistant, Document viewer/editor, Photo/video editor   SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant, Photo/video editor, Document viewer