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Samsung Galaxy Z Fold 4 vs Oppo A18 128GB

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: 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   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/Sub6  
Dimensions Folded: (155.1 x 67.1 x 15.8 mm), Unfolded: (155.1 x 130.1 x 6.3 mm)   163.7 x 75 x 8.2 mm  
Sim Type Up to two Nano Sim and one eSIM   Dual Sim, Dual Standby (Nano-SIM)  
Weight 263 g   188 g  
Display Type Foldable Dynamic AMOLED 2X Capacitive Touchscreen, Multitouch   120Hz, Cover display: Dynamic AMOLED 2X, 6.2 inches, 904 x 2316 pixels, 120Hz, 25:9 ratio, 120Hz, Corning Gorilla Glass Victus+   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 720 nits (peak)  
Display Size 7.6 Inches   1812 x 2176 Pixels (~373 PPI)   6.56 Inches   720 x 1612 Pixels (~269 PPI)  
Protection Corning Gorilla Glass Victus+   Corning Gorilla Glass  
Memory 256/512GB Built-in, 12GB RAM, 1TB Buit-in, UFS 3.1   128GB Built-in, 4GB RAM (+4GB virtual RAM)  
Card slot No   microSDXC  
GPRS Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot   Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth v5.2 with A2DP, LE, apt-X HD   v5.3 with A2DP, LE, aptX  
USB USB Type-C 3.2, USB On-The-Go   USB Type-C 2.0, OTG  
NFC Yes   No  
GPS Yes + AGPS, GLONASS, BDS, GALILEO   Yes + A-GPS support & Glonass, BDS, GALILEO  
Main Camera Triple Camera: 50 MP, f/1.8, (wide), Dual Pixel PDAF, OIS + 10 MP, f/2.4, (telephoto), 1.0µm, PDAF, OIS, 3x optical zoom + 12 MP, f/2.2, 12mm (ultrawide), LED Flash   Geo-tagging, touch focus, HDR, panorama, Video (4K@60fps, 1080p@60/240fps (gyro-EIS), 720p@960fps (gyro-EIS), HDR10+)   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 Cover Camera: 10 MP, f/2.2, 26mm (wide), 1/3.24", HDR, Video (4K@30fps, 1080p@30fps, gyro-EIS) + under display: 4 MP, f/1.8, 26mm (wide)   5 MP, f/2.2, (wide), Panorama, Video (1080p@30fps)  
OS Android 12 OS   Android 13 OS  
Chipset Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)   Mediatek MT6769 Helio G85 (12nm)  
Processor Octa-core (1 x 3.19 GHz Cortex-X2 + 3 x 2.75 GHz Cortex-A710 + 4 x 1.80 GHz Cortex-A510)   Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU Adreno 670   Arm Mali-G52  
Sensors Accelerometer, Barometer, Compass, Fingerprint (side mounted), Gyro, Proximity   Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5   HTML5  
Sound 32-bit/384kHz audio Tuned by AKG, Speaker Phone   3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker  Phone  
Colors Graygreen, Phantom Black, Beige, Burgundy   Glowing Black, Glowing Blue  
Battery (Li-Po Non removable), 4400 mAh   - Fast charging 25W, Fast wireless charging 15W, Reverse wireless charging 4.5W   (Li-Po Non removable), 5000 mAh  
Misc SMS(threaded view), MMS, Email, Push Mail, IM   Glass front + Gorilla Glass Victus+) (folded), Plastic front (unfolded), glass back + Gorilla Glass Victus+), Aluminum frame, IPX8 water resistant (up to 1.5m for 30 mins), Armour aluminum frame with tougher drop and scratch resistance (advertised), Stylus support, Active noise cancellation with dedicated mic, Document viewer, Photo video/editor   SMS(threaded view), MMS, Email, Push Mail, IM   IP54, dust and splash resistant, Photo/video editor, Document viewer