Karbonn A4 vs Lenovo A3900
Karbonn A4
Lenovo A3900
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Network
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2G networkGSM 850, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 900, 2100HSDPA 900, 2100
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HSDPA speedHSDPA-
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HSUPA speedHSUPA-
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LTE speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-32015-5
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Status2013-32015-6
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Mini-SIM/ Micro-SIM, dual stand-by)
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Height124.8 mm142.8 mm
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Width66 mm71.8 mm
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Thickness9.5 mm9 mm
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Weight75 g157 g
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ColorsWhite/BlackBlack, Pearl White, Silver
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Display
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Display typeTFT capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.0 inches5.0 inches
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Resolution320 x 480 pixels480 x 854 pixels
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Pixel density144 ppi196 ppi
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Display colors26214416777216
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Hardware
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CPUOcta-core 1.2 GHz ARM Cortex-A53
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Chipset-Mediatek MT6752
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GPU-Mali-T760MP2
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Internal storage256, 512 MB4 GB
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Memory RAM-512 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, v2.3.6 (Gingerbread)Android OS, v4.4.2 (KitKat)
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Main camera
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Main camera3.15 MP5 MP
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Primary camera resolution2048 x 1536 pixels2592 x 1944 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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Camera features-Yes
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Selfie camera
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Secondary cameraYes-
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Selfie camera2 MP
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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; MP3, WAV ringtones
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Multimedia
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Radio FMFM radio-
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Connectivity
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WLANWi-FiWi-Fi
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WLAN WiFi HotspotYes-
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USBYesmicroUSB 2.0
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USB host-Yes
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BluetoothYesv4.0
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Bluetooth A2DP-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 IMIMIM
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Messaging Push Email-Push Mail
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, proximity
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity1400 mAh2300 mAh
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Talk time4 h 20 min-
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Standby time250 h-
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