Karbonn A4 vs Xiaomi Mi 4
Karbonn A4
Xiaomi Mi 4
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Network
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2G networkGSM 850, 1900GSM 850, 900, 1800, 1900, CDMA 800, 1900
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3G networkHSDPA 900, 2100HSDPA 850, 900, 1900, 2100, TD-SCDMA 2010-2025/1880-1920, CDMA2000 1xEV-DO
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4G network-TD-LTE 2570-2620, 1880-1920, 2300-2400
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HSDPA speedHSDPA42 Mbps
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HSUPA speedHSUPAHSUPA
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EV-DO speed-3.1 Mbps
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LTE speed-LTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-32014-7
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Status2013-32014-8
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Design
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SIMDual SIM (Mini-SIM)Micro-SIM
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Height124.8 mm139.2 mm
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Width66 mm68.5 mm
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Thickness9.5 mm8.9 mm
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Weight75 g149 g
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ColorsWhite/BlackBlack, White
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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 pixels1080 x 1920 pixels
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Pixel density144 ppi441 ppi
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Display colors26214416777216
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Hardware
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CPUQuad-core 2.5 GHz Krait 400
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Chipset-Qualcomm MSM8974AC Snapdragon 801
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GPU-Adreno 330
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Internal storage256, 512 MB16, 64 GB
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Memory RAM-3 GB
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Memory cardmicroSD
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Memory card max32 GB-
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OS
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OSAndroid OS, v2.3.6 (Gingerbread)Android OS, v4.4.3 (KitKat)
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Main camera
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Camera type-Photo / Video
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Main camera3.15 MP13 MP
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Primary camera resolution2048 x 1536 pixels4128 x 3096 pixels
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Primary camera videovideo2160p@30fps, 1080p@30fps, 720p@120fps
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Primary camera Autofocus-autofocus
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Primary camera flash-LED flash
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Selfie camera
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Secondary cameraYes-
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Selfie camera8 MP
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Selfie camera video-1080p@30fps
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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-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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WLAN DLNA-Yes
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USBYesmicroUSB 2.0
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USB On-The-Go-Yes
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BluetoothYesv4.0
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Bluetooth A2DP-Yes
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Infrared-Yes
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GPSNoYes, with A-GPS
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GLONASS-Yes
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GPS Navigator-Beidou
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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 emulatorYes, via Java MIDP emulator
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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 mAh3080 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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Standby time 3G-280 h