Celkon S1 vs Oppo R811 Real
Celkon S1
Oppo R811 Real
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Network
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2G networkGSM 900, 1800GSM 900, 1800, 1900
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3G networkHSDPA 2100TD-SCDMA 1880-1920/2010-2025
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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HSPA speed-HSPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-22012-10
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Status2014-22012-12
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Design
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SIMDual SIMDual SIM (Mini-SIM, dual stand-by)
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Height144 mm115.2 mm
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Width71 mm61.5 mm
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Thickness8.9 mm10.9 mm
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Weight137 g119 g
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ColorsBlackWhite
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Display
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Display typeIPS LCD capacitive touchscreenTFT capacitive touchscreen
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Physical size5.0 inches3.5 inches
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Resolution1080 x 1920 pixels320 x 480 pixels
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Pixel density441 ppi165 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.5 GHz1 GHz ARM Cortex-A9
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Chipset-Mediatek MT6515
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GPU-PowerVR SGX531
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Memory RAM1 GB512 MB
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Internal storage16 GB4 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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OS
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OSAndroid OS, v4.2.1 (Jelly Bean)Android OS, v4.0.4 (Ice Cream Sandwich)
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Main camera
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Main camera13 MP3.15 MP
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Primary camera resolution4160 x 3120 pixels2048 x 1536 pixels
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Primary camera videovideovideo
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flash-
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Selfie camera
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Secondary camera-Yes
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Selfie camera8 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic, MP3 ringtonesVibration, MP3, WAV ringtones
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Multimedia
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Radio-No
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Radio FMFM radio-
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g
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WLAN WiFi HotspotYesYes
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesYes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIM-
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Messaging Push EmailPush MailPush Email
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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity2300 mAh1520 mAh
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Talk time-10 h
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Standby time-250 h
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