Karbonn A4 vs Vertu Signature Touch (2015)
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Karbonn A4
Vertu Signature Touch (2015)
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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 850, 900, 1700(AWS), 1900, 2100
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HSDPA speedHSDPA42.2 Mbps
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HSUPA speedHSUPA5.76 Mbps
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LTE speed-LTE, Cat6, 300 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 announced2013-32015-9
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Status2013-32015-10
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Design
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SIMDual SIM (Mini-SIM)Yes
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Height124.8 mm155 mm
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Width66 mm74 mm
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Thickness9.5 mm10.8 mm
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Weight75 g236 g
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ColorsWhite/BlackClous de Paris Alligator, Garnet Calf, Grape Lizard, Jet Alligator, Jet Calf, Pure Jet Lizard, Pure Jet Red Gold, Pure Navy Alligator
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Display
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Display typeTFT capacitive touchscreenSapphire crystal glass capacitive touchscreen
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Physical size4.0 inches5.2 inches
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Resolution320 x 480 pixels1080 x 1920 pixels
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Pixel density144 ppi424 ppi
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Display colors26214416777216
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Hardware
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CPUQuad-core 1.56 GHz ARM Cortex-A53
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CPU(second)quad-core 1.82 GHz ARM Cortex-A57
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Chipset-Qualcomm MSM8994 Snapdragon 810
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GPU-Adreno 430
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Internal storage256, 512 MB64 GB
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Memory RAM-4 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, v2.3.6 (Gingerbread)Android OS, v5.1 (Lollipop)
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Main camera
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Main camera3.15 MP21 MP
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Primary camera resolution2048 x 1536 pixels5248 x 3936 pixels
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Primary camera videovideovideo
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Primary camera flash-dual-LED (dual tone) flash
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Primary camera phase detection autofocus-phase detection autofocus
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Camera features-Geo-tagging, HDR, face/smile detection, panorama, touch focus
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Selfie camera
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Secondary cameraYes-
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Selfie camera2.1 MP
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes, with stereo speakers
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NotificationsVibration, MP3, WAV ringtonesVibration; MP3, WAV ringtones
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Multimedia
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Radio-No
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Radio FMFM radio-
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Connectivity
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WLANWi-FiWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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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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bluetooth LE-Yes
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Bluetooth AptX-Yes
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GPSNoYes, 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 Mail-Push Mail
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, compass, gyro, 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 capacity1400 mAh3160 mAh
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Battery removable-Non-removable
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Talk time4 h 20 min-
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Standby time250 h-
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