Celkon A21 vs Samsung Galaxy S6 active
Celkon A21
Samsung Galaxy S6 active
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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, 1900, 2100
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HSDPA speedHSDPA42.2 Mbps
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HSUPA speed-5.76 Mbps
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LTE speed-LTE, Cat6, 300 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 announced2014-122015-6
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Status2014-122015-6
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Design
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SIMDual SIM (dual stand-by)Nano-SIM
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Height124.8 mm
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Width66.1 mm
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Thickness10.8 mm
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Weight115.3 g
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ColorsBlack, Blue, RedGray, White
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Display
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Display typeCapacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size4.0 inches5.1 inches
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Resolution320 x 480 pixels1440 x 2560 pixels
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Pixel density144 ppi576 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1.2 GHzQuad-core 1.5 GHz ARM Cortex-A53
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CPU(second)quad-core 2.1 GHz ARM Cortex-A57
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ChipsetMediatek MT6582Exynos 7420
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GPU-Mali-T760
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Memory ROM512 MB-
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Memory RAM256 MB-
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Internal storage-32 GB
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Memory cardmicroSD
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Memory card max32 GB-
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OS
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OSAndroid OS, v4.2.2 (Jelly Bean)Android OS, v5.0.2 (Lollipop)
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Main camera
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Main camera3.15 MP16 MP
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Primary camera resolution-2988 x 5312 pixels
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Primary camera videovideo2160p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Camera features-Auto HDR, Geo-tagging, face detection, panorama, touch focus
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Selfie camera
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Selfie camera1.3 MP5 MP
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Selfie camera video-1080p@30fps
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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-FiWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi Hotspot-Yes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBYesmicroUSB 2.0
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Bluetoothv4.0v4.1
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Bluetooth A2DP-Yes
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bluetooth LE-Yes
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Bluetooth AptX-Yes
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Infrared-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 IM-IM
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Messaging Push Email-Push Mail
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, barometer, compass, gyro, heart rate, proximity
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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 capacity1500 mAh3500 mAh
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Battery removable-Non-removable
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Talk time 3G8 h23 h
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Standby time--
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Standby time 3G120 h-
