BLU Ultra vs Karbonn A4
BLU Ultra
Karbonn A4
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Network
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2G networkGSM 850, 1900GSM 850, 1900
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3G network-HSDPA 900, 2100
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HSDPA speed-HSDPA
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HSUPA speed-HSUPA
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GPRSYes
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EDGEYes
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Availability
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Oficially announced20112013-3
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Status2013-3
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Design
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SIMMini-SIMDual SIM (Mini-SIM)
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Height105.5 mm124.8 mm
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Width45 mm66 mm
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Thickness12.7 mm9.5 mm
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Weight75 g
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ColorsBlack, Blue, Red, YellowWhite/Black
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Display
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Display typeMonochrome graphicTFT capacitive touchscreen
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Physical size1.31 inches4.0 inches
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Resolution96 x 64 pixels320 x 480 pixels
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Pixel density88 ppi144 ppi
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Display colors-262144
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Hardware
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Internal storage16 MB256, 512 MB
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Memory cardmicroSDmicroSD
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Memory card max4 GB32 GB
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration, PolyphonicVibration, MP3, WAV ringtones
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi
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WLAN WiFi Hotspot-Yes
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USBYesYes
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BluetoothYes
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GPSNoNo
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Features
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Messaging SMSSMSSMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging IM-IM
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JavaNoYes, via Java MIDP emulator
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Browser
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HTML-Yes
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BrowserNo-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity500 mAh1400 mAh
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Talk time8 h4 h 20 min
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Standby time400 h250 h
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OS
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OS-Android OS, v2.3.6 (Gingerbread)
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Main camera
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Main camera3.15 MP
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Primary camera resolution-2048 x 1536 pixels
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Primary camera video-video
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Selfie camera
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Secondary camera-Yes
