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Oppo Oppo F21 Pro 5G vs Samsung Galaxy Z Fold 4 12GB

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 2100   HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)   LTE  
5G Network SA/NSA   SA/NSA/Sub6  
Dimensions 159.9 x 73.2 x 7.5 mm   Folded: (155.1 x 67.1 x 15.8 mm), Unfolded: (155.1 x 130.1 x 6.3 mm)  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   eSIM (Nano-SIM)  
Weight 173 g   263 g  
Display Type 430 nits (typ), 600 nits (HBM)   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+  
Display Size 1080 x 2400 Pixels (~409 PPI)   7.6 Inches   1812 x 2176 Pixels (~373 PPI)  
Protection Schott Xensation glass   Corning Gorilla Glass Victus+  
Memory 128GB Built-in, 8GB RAM, UFS 2.2   512GB Built-in, 12GB RAM, UFS 3.1  
Card slot microSDXC   No  
GPRS Yes 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/6e, dual-band, Wi-Fi Direct, hotspot  
BlueTooth v5.1 with A2DP, LE, apt-X HD   v5.2 with A2DP, LE, apt-X HD  
USB USB Type-C 2.0, USB On-The-Go   USB Type-C 3.2, USB On-The-Go  
NFC No   Yes  
GPS Yes + A-GPS support, & GLONASS, GALILEO, QZSS   Yes + AGPS, GLONASS, BDS, GALILEO  
Main Camera Phase detection, Geo-tagging, touch focus, face detection, HDR, panorama, Video ([email protected], gyro-EIS)   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+)  
Front Camera 16 MP, f/2.4, 27mm (wide), HDR, panorama, Video ([email protected])   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)  
OS Android 12 OS   Android 12 OS  
Chipset Qualcomm SM6375 Snapdragon 695 5G (6 nm)   Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)  
Processor Octa-core (2 x 2.2 GHz Kryo 660 Gold + 6 x 1.7 GHz Kryo 660 Silver)   3.19Ghz Octa Core  
GPU Adreno 619   Adreno 670  
Sensors Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity   Accelerometer, Barometer, Compass, Fingerprint (side mounted), Gyro, Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/H.264/FLAC player, MP3/eAAC+/WAV player, Speaker Phone   32-bit/384kHz audio Tuned by AKG, Speaker Phone  
Colors Rainbow Spectrum, Cosmic Black   Graygreen, Phantom Black, Beige, Burgundy  
Battery - Fast charging 33W, 31% in 15 min, 100% in 63 min (advertised), Reverse charging, USB Power Delivery   (Li-Po Non removable), 4400 mAh   - Fast charging 25W, Fast wireless charging 15W, Reverse wireless charging 4.5W  
Misc RGB ring lights around the cameras (notifications, charging progress), IPX4, dust and water resistant, Document editor, Photo/video editor   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