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Oppo A18 128GB vs Tecno Spark 40

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  Best smartphone
3G Network HSDPA 850 / 900 / 2100   HSDPA 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)   LTE  
Dimensions 163.7 x 75 x 8.2 mm   165.6 x 77 x 7.7 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Nano-SIM + Nano-SIM  
Weight 188 g   N/A  
Display Type IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)   IPS LCD Capacitive Touchscreen   120Hz  
Display Size 6.56 Inches   720 x 1612 Pixels (~269 PPI)   6.67 Inches   1080 x 2460 Pixels (~403 PPI)  
Protection Corning Gorilla Glass  
Memory 128GB Built-in, 4GB RAM (+4GB virtual RAM)   128/256GB Built-in, 4/6/8GB RAM  
Card slot microSDXC   microSDXC  
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band   Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth v5.3 with A2DP, LE, aptX   v5.4 with A2DP, LE  
USB USB Type-C 2.0, OTG   USB Type-C  
NFC No   No  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO   Yes + A-GPS support  
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)   Single Camera: 50 MP, (wide), PDAF Auxiliary lens, Dual LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 5 MP, f/2.2, (wide), Panorama, Video (1080p@30fps)   8 MP, (wide), Dual LED Flash, Video (1080p@30fps)  
OS Android 13 OS   Android 15 OS  
Chipset Mediatek MT6769 Helio G85 (12nm)   Mediatek Helio G81 (12 nm)  
Processor Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)   Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU Arm Mali-G52   Mali-G52 MC2  
Sensors Accelerometer, Compass, Fingerprint (side-mounted), Proximity   Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone   3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone  
Colors Glowing Black, Glowing Blue   Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery (Li-Po Non removable), 5000 mAh   5200 mAh   - Fast battery 45W wired, 55 min to 100%  
Misc SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant, Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m