Celkon A21 vs Nokia Lumia 510
Celkon A21
Nokia Lumia 510
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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 speedHSDPAHSDPA, 7.2 Mbps
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UL speed-UL, 384 kbps
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122012-10
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Status2014-122012-11
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Design
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SIMDual SIM (dual stand-by)Micro-SIM
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Height124.8 mm120.7 mm
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Width66.1 mm64.9 mm
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Thickness10.8 mm11.5 mm
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Weight115.3 g129 g
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ColorsBlack, Blue, RedBlack, Cyan, Red, White, Yellow
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Display
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Display typeCapacitive touchscreenTFT capacitive touchscreen
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Physical size4.0 inches4.0 inches
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Resolution320 x 480 pixels480 x 800 pixels
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Pixel density144 ppi233 ppi
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Display colors-66560
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Hardware
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CPUDual-core 1.2 GHz800 MHz ARM Cortex-A5
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ChipsetMediatek MT6582Qualcomm MSM7227A Snapdragon
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GPU-Adreno 200
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Memory ROM512 MB-
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Memory RAM256 MB256 MB
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Internal storage-4 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)Microsoft Windows Phone 7.8
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Main camera
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Camera type-Photo
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Main camera3.15 MP5 MP
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Primary camera resolution-2596 x 1948 pixels
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Primary camera videovideo480p@30fps
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Primary camera Autofocus-autofocus
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Selfie camera
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Secondary camera-No
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Selfie camera1.3 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 FMFM radioStereo FM radio
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Connectivity
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WLANWi-FiWi-Fi 802.11b, 802.11g, 802.11n
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USBYesmicroUSB 2.0
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Bluetoothv4.0v2.1
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Bluetooth A2DP-Yes
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Bluetooth EDR-Yes
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GPSNoYes, 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 IM-IM
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JavaYes, via Java MIDP emulatorNo
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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 mAh1300 mAh
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Talk time 2G-6 h 15 min
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Talk time 3G8 h8 h 25 min
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Standby time 2G-739 h
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Standby time 3G120 h653 h
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