NIU C21A vs Oppo U3
NIU C21A
Oppo U3
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G network-TD-SCDMA 1900, 2000
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HSPA speed-HSPA
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LTE speed-LTE
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2013-32015-1
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Status2013-42015-3
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Nano-SIM/ Micro-SIM, dual stand-by)
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Height106 mm156.8 mm
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Width45 mm81 mm
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Thickness14.5 mm8 mm
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Weight73 g195 g
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ColorsBlack, Blue, Fuchsia, Green, Purple, Red, WhiteBlack, White
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Display
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Display typeTFTIPS LCD capacitive touchscreen
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Physical size1.8 inches5.9 inches
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Resolution128 x 160 pixels1080 x 1920 pixels
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Pixel density114 ppi377 ppi
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Display colors26214416777216
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Hardware
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CPUOcta-core 1.7 GHz ARM Cortex-A53
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Chipset-Mediatek MT6752
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GPU-Mali-T760MP2
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Internal storage64 Mbit16 GB
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Memory RAM-2 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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Main camera
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Main camera13 MP
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Primary camera resolution640 x 480 pixels4128 x 3096 pixels
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Primary camera videono1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Camera featuresNoGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Flash-LED flash
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Secondary cameraNo-
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Selfie camera5 MP
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Selfie camera video-1080p
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration, PolyphonicVibration; MP3, WAV ringtones
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Multimedia
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Radio-No
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Radio FMStereo FM radio-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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USBYesmicroUSB 2.0
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Bluetoothv2.0v4.0
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GPSNoYes, with A-GPS
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Features
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Messaging SMSSMSSMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging IMIM-
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Messaging Push Email-Push Email
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WAPYes-
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JavaNoYes, via Java MIDP emulator
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Sensors-Accelerometer, compass, proximity
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity600 mAh3100 mAh
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Talk time4 h-
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Talk time 3G-10 h
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Standby time200 h-
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Standby time 3G-400 h
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OS
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OS-Android OS, v4.4.4 (KitKat)
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Browser
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HTML-HTML5