Celkon A20 vs HTC Desire 820s dual sim
Celkon A20
HTC Desire 820s dual sim
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100HSDPA 850, 900, 1900, 2100
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HSDPA speed-42.2 Mbps
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HSUPA speed-5.76 Mbps
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Speed YesYes, 384 kbps-
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LTE speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-82015-3
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Status2013-82015-3
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Nano-SIM, dual stand-by)
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Height157.7 mm
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Width78.7 mm
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Thickness7.7 mm
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Weight155 g
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ColorsBlackMarble White, Milkyway Gray, Monarch Orange, Santorini White, Tuxedo Gray
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Display
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Display typeTFT capacitive touchscreenCapacitive touchscreen
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Physical size4.0 inches5.5 inches
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Resolution480 x 800 pixels720 x 1280 pixels
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Pixel density233 ppi267 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1.2 GHzOcta-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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Memory ROM256 MB-
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Memory RAM512 MB2 GB
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Internal storage-16 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, v4.2.0 (Jelly Bean)Android OS, v4.4.4 (KitKat)
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Main camera
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Main camera3.15 MP13 MP
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Primary camera resolution2048 x 1536 pixels4160 x 3120 pixels
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Primary camera videovideo1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Camera features-Geo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Secondary cameraVGA camera-
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Selfie camera8 MP
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Selfie camera video-1080p
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes, with stereo speakers
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NotificationsVibration, Polyphonic, MP3 ringtonesVibration; MP3, WAV ringtones
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesv4.0
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Bluetooth A2DP-Yes
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GPSNoYes, with A-GPS
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GLONASS-Yes
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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 EmailPush Email
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, compass, proximity
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity1500 mAh2600 mAh
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Battery removable-Non-removable
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Talk time--
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Talk time 3G-12 h 10 min
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Standby time--
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Standby time 3G-560 h
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Multimedia
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Radio FM-FM radio