Allview A4 Duo vs Celkon A99+
Allview A4 Duo
Celkon A99+
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Network
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2G networkGSM 900, 1800GSM 900, 1800, 1900
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3G networkHSDPA 900, 2100HSDPA 850, 900, 1900, 2100
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HSDPA speedHSDPAHSDPA
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HSUPA speedHSUPAHSUPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-112012
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Status2013-112012
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Design
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SIMDual SIM (dual stand-by)Dual SIM (Mini-SIM)
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Height116.1 mm126.1 mm
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Width63.2 mm65.4 mm
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Thickness12 mm12.3 mm
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Weight110.6 g
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ColorsBlackBlack
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Display
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Display typeTFT capacitive touchscreenTFT capacitive touchscreen
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Physical size3.5 inches4.3 inches
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Resolution320 x 480 pixels540 x 960 pixels
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Pixel density165 ppi256 ppi
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Hardware
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CPUDual-core 1 GHz ARM Cortex-A7650 MHz
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GPUMali-400-
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Memory RAM512 MB-
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Memory cardmicroSD
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Memory card max-32 GB
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OS
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OSAndroid OS, v4.2 (Jelly Bean)Android OS, v2.3.5 (Gingerbread)
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Main camera
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Main camera2 MP8 MP
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Primary camera resolution1600 x 1200 pixels3264 x 2448 pixels
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Primary camera videovideovideo
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Selfie camera
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Secondary cameraNoYes
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, MP3, WAV ringtonesVibration, Polyphonic, MP3 ringtones
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Multimedia
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Radio FMFM radioStereo FM radio with RDS
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Radio recording-FM recording
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Radio transmitter-FM transmitter
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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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WLAN WiFi DirectYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v2.1
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Bluetooth A2DPYesYes
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Bluetooth EDRYes-
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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 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 capacity1200 mAh1300 mAh
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Talk time8 h 20 min6 h
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Standby time200 h500 h
