Celkon A20 vs Celkon A77
Celkon A20
Celkon A77
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100-
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Speed YesYes, 384 kbps-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2013-82012-12
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Status2013-82012-12
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Mini-SIM)
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Height118 mm
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Width61 mm
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Thickness13.5 mm
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Weight104 g
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ColorsBlackBlack, White
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size4.0 inches3.5 inches
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Resolution480 x 800 pixels320 x 420 pixels
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Pixel density233 ppi151 ppi
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Hardware
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CPUDual-core 1.2 GHz1 GHz
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Memory ROM256 MB-
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Memory RAM512 MB-
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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, v2.3 (Gingerbread)
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Main camera
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Main camera3.15 MP2 MP
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Primary camera resolution2048 x 1536 pixels1600 x 1200 pixels
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Primary camera videovideovideo
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Selfie camera
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Secondary cameraVGA cameraYes
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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, Polyphonic, MP3 ringtones
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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USBmicroUSB 2.0microUSB 2.0
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BluetoothYesYes
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GPSNoNo
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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 IMIMIM
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Messaging Push EmailPush Email-
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JavaYes, via Java MIDP emulatorYes, via Java MIDP emulator
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Browser
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HTMLYesYes
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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-4 h 45 min
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Standby time-130 h
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Multimedia
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Radio FM-Stereo FM radio
