Karbonn A27 Retina vs Microsoft Lumia 540 Dual SIM
Karbonn A27 Retina
Microsoft Lumia 540 Dual SIM
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Network
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2G networkGSM 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100HSDPA 900, 2100
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HSDPA speedHSDPA, 7.2 Mbps42.2 Mbps
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HSUPA speed-5.76 Mbps
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-32015-4
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Status2013-32015-5
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Design
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SIMDual SIM (Mini-SIM)Dual SIM (Micro-SIM, dual stand-by)
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Height133.6 mm144 mm
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Width66 mm73.7 mm
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Thickness9.1 mm8.6 mm
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Weight126.5 g152 g
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ColorsBlackOrange, black, blue, gray, white
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Display
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Display typeIPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.3 inches5.0 inches
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Resolution540 x 960 pixels720 x 1280 pixels
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Pixel density256 ppi294 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1.2 GHzQuad-core 1.2 GHz ARM Cortex-A7
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Chipset-Qualcomm Snapdragon 200
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GPU-Adreno 302
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Internal storage4 GB8 GB
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Memory RAM512 MB1 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB128 GB
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OS
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OSAndroid OS, v4.1 (Jelly Bean)Microsoft Windows Phone 8.1 with Lumia Denim
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Main camera
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Main camera8 MP8 MP
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Primary camera resolution3264 x 2448 pixels3264 x 2448 pixels
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Primary camera videovideo480p@30fps
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flashLED flash
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Camera features-1/4'' sensor size, geo-tagging
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Selfie camera
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Selfie camera2 MP5 MP
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Selfie camera video-480p
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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 radioFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYes-
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WLAN DLNA-Yes
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USBYesmicroUSB 2.0
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BluetoothYesv4.0
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Bluetooth A2DP-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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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 EmailPush Email
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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-Ion
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Battery capacity1800 mAh2200 mAh
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Talk time4 h-
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Talk time 2G-26 h
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Talk time 3G-15 h
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Standby time180 h-
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Standby time 2G-576 h
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Standby time 3G-576 h
