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Vivo V25 vs Oppo A18 128GB

2G Network SIM1: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100   HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300), 41(2500)   LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
5G Network SA/NSA  
Dimensions 159.2 x 74.2 x 7.8 mm   163.7 x 75 x 8.2 mm  
Sim Type Hybrid Dual SIM, Dual Standby, (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 186 g   188 g  
Display Type AMOLED Capacitive Touchscreen, Multitouch   90Hz, HDR10+, 1300 nits (peak)   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)  
Display Size 6.44 Inches   1080 x 2404 Pixels (~409 PPI)   6.56 Inches   720 x 1612 Pixels (~269 PPI)  
Protection Corning Gorilla Glass  
Memory 256GB Built-in, 12GB RAM (+8GB Extended RAM)   128GB Built-in, 4GB RAM (+4GB virtual RAM)  
Card slot microSDXC (uses shared SIM slot)   microSDXC  
GPRS Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot   Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth v5.2 with A2DP, LE   v5.3 with A2DP, LE, aptX  
USB USB Type-C 2.0, USB On-The-Go   USB Type-C 2.0, OTG  
NFC Yes   No  
GPS Yes + A-GPS support, & GLONASS, BDS, GALILEO, QZSS, NavIC   Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera Triple Camera: 64 MP, f/1.8, (wide), PDAF, OIS + 8 MP, f/2.2, 16mm, (ultrawide), 1/4" + 2 MP, f/2.4, (macro), LED Flash   Phase detection, touch focus, Geo-tagging, HDR, panorama, Video (4K@30fps, 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 50 MP, f/2.0, (wide), AF, HDR, Video (4K@30fps, 1080p@30fps, HDR)   5 MP, f/2.2, (wide), Panorama, Video (1080p@30fps)  
OS Android 12 OS   Android 13 OS  
Chipset MediaTek MT6877 Dimensity 900 (6 nm)   Mediatek MT6769 Helio G85 (12nm)  
Processor Octa-core (2 x 2.4 GHz Cortex-A78 + 6 x 2.0 GHz Cortex-A55)   Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Mali-G68 MC4   Arm Mali-G52  
Sensors Color changing back panel color, Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity   Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5   HTML5  
Sound 24-bit/192kHz audio, Speaker Phone   3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone  
Colors Aquamarine Blue, Diamond Black   Glowing Black, Glowing Blue  
Battery (Li-Po Non removable), 4500 mAh   - Fast charging 44W, 61% in 30 min (advertised)   (Li-Po Non removable), 5000 mAh  
Misc SMS(threaded view), MMS, Email, Push Mail, IM   Glass front + Glass back, Document viewer, Photo/video editor   SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant, Photo/video editor, Document viewer