Asus ROG Phone 3 ZS661KS vs Oukitel C21 Pro
Asus ROG Phone 3 ZS661KS
Oukitel C21 Pro
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Network
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2G networkGSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMAGSM 850, 900, 1800, 1900
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3G networkHSDPA 800, 850, 900, 1700(AWS), 1800, 1900, 2100 - A version; HSDPA 850, 900, 1700(AWS), 1900, 2100 - B versionHSDPA 900, 2100
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 48, 66, 71 - A version; LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 34, 38, 39, 40, 41 - B versionLTE frequency band 1, 3, 7, 8, 19, 20
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5G network5G band 1, 2, 3, 5, 28, 41, 66, 71, 77, 78, 79; SA/NSA - A version; 5G band 41, 77, 78, 79 SA/NSA - B version-
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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speedLTE-A, (6CA) Cat20, 2000 Mbps download, 150 Mbps uploadLTE, 301 Mbps download, 150 Mbps upload
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5G speed4.4 Gbps download-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-072021-06
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Status2020-072021-06
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Design
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BuildGlass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum framePlastic
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height171 mm162 mm
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Width78 mm75 mm
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Thickness9.9 mm9 mm
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Weight240 g192 g
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Build featuresRGB light panel (on the back), Pressure sensitive zones (Gaming triggers)-
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ColorsBlackBlack, Green, Purple
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Display
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Display typeAMOLED capacitive touchscreenIPS LCD
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Physical size6.59 inches6.39 inches
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Resolution1080 x 2340 pixels720 x 1560 pixels
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Pixel density391 ppi269 ppi
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Display colors107374182416777216
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ProtectionCorning Gorilla Glass 6Scratch resistant, 2.5D curved glass screen
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Display featuresHDR10+, 144Hz refresh rate, 650 nits max. brightness-
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DxOMark display score70-
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Hardware
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CPUOcta-coreOcta-core
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CPUSingle-core 3.1 GHz Kryo 585Quad-core 1.8 GHz Cortex-A53
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CPU(second)Triple-core 2.42 GHz Kryo 585quad-core 1.5 GHz Cortex-A53
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CPU(third)Quad-core 1.8 GHz Kryo 585
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ChipsetQualcomm SM8250 Snapdragon 865+MediaTek Helio P22 (MT6762D)
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GPUAdreno 650PowerVR GE8320
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Memory RAM8, 12, 16 GB4 GB
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Internal storage128, 256, 512 GB64 GB
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Memory cardNomicroSD, microSDHC, microSDXC
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Memory card max-256 GB
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StorageUFS 3.1-
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OS
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OSROG UI (Android 10)Android 11
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Main camera
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Camera typeTripleTriple
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Main camera64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm12 MP, f/2.2 , 1/2.55"
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13 MP, f/2.4 , 11 mm2 MP, f/2.2 , (macro) , 76˚ , 1/5" , 1.75 µm
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5 MP, f/2.00.3 MP, (depth)
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Primary camera resolution-4032 x 3024 pixels
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Primary camera video8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS1080p@30fps
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Primary camera flashLED flashLED flash
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Camera featuresHDR, PanoramaAutofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus
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Selfie camera
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Selfie camera type-Single
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Selfie camera24 MP, f/2.0 , 27 mm, 0.9 µm8 MP, f/2.2 , 1.12 µm, 81˚ , 1/4"
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Selfie camera resolution-3264 x 2448 pixels
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Selfie camera features-Face unlock
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Selfie camera video1080p@30fps1080p@30fps
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Sound
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3.5mm jackNoNo
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LoudspeakerYes, with DTS X stereo speakersYes
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EarpieceYesYes
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Multimedia
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RadioNoFM Radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11adWi-Fi 802.11a, 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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Wi-Fi displayYes-
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WLAN WiFi Dual BandYes-
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USBType-C 3.1 (side), Type-C 2.0 (bottom)Type-C 2.0
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USB connectorAccessory connector-
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Bluetoothv5.1v4.2
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Bluetooth A2DPYesYes
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bluetooth LEYes-
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Bluetooth AptXaptX HD, aptX Adaptive-
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NFCYesNo
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYes-
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QZSSYes-
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GNSSYes-
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Features
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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityAccelerometer, fingerprint, light, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Po
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Battery capacity6000 mAh4000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingQuick Charge 4.0Yes
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Wireless reverse chargingYes-
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Talk time 4G-10 h
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Standby time 4G-360 h
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Cost
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Price600 USD130 USD
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Tests and performance
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Antutu-95488 (v8)
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Geekbench(single-core)-154 (v5.2)
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Geekbench(multi-core)-741 (v5.2)
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SAR value
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SAR EU(head)-0.75 W/kg
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SAR EU(body)-1.16 W/kg