Karbonn KT21 Express vs ZTE Open II
Karbonn KT21 Express
ZTE Open II
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Network
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2G networkGSMGSM 850, 900, 1800, 1900
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3G network-HSDPA
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HSDPA speed-HSDPA
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HSUPA speed-HSUPA
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122014-2
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Status2014-6
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Design
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SIMDual SIM (Mini-SIM)Yes
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Height118 mm
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Width61 mm
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Thickness10.5 mm
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Weight
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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 size2.8 inches3.5 inches
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Resolution-320 x 480 pixels
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Pixel density-165 ppi
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Hardware
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CPUDual-core 1.2 GHz
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Chipset-Qualcomm MSM8210 Snapdragon 200
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GPU-Adreno 302
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Memory RAM-256 MB
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Internal storage-2 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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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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Primary camera flashLED flash-
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic(64), MP3 ringtonesVibration; MP3 ringtones
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Multimedia
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Radio FMFM radioFM radio
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Radio recordingFM recording-
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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USBYesmicroUSB 2.0
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BluetoothYesYes
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GPSNoNo
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Features
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Messaging SMSSMSSMS(threaded view)
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Messaging MMSMMS-
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Messaging EmailEmailEmail
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Messaging IM-IM
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JavaYesNo
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Browser
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HTML-Yes
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BrowserYes-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1000 mAh1150 mAh
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Talk time--
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Standby time--
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OS
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OS-Firefox OS 1.3
