Karbonn A7 Star vs Oppo A31 (2015)
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Karbonn A7 Star
Oppo A31 (2015)
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Network
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2G networkGSM 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G network-TD-SCDMA 1880, 2010
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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 announced2014-122015-4
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Status2014-122015
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Design
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SIMDual SIMDual SIM (Nano-SIM/ Micro-SIM, dual stand-by)
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Height113 mm131.9 mm
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Width66 mm65.5 mm
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Thickness10.4 mm8 mm
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Weight135 g
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ColorsWhite/BlackBlue, White
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Display
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Display typeCapacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.5 inches4.5 inches
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Resolution480 x 854 pixels480 x 854 pixels
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Pixel density218 ppi218 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1 GHz ARM Cortex-A9Quad-core ARM Cortex-A53
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ChipsetMediatek MT6517Qualcomm MSM8916 Snapdragon 410
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GPUPowerVR SGX531uAdreno 306
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Internal storage164 MB8 GB
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Memory RAM-1 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, v4.0 (Ice Cream Sandwich)Android OS, v4.4 (KitKat)
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Main camera
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Main camera5 MP8 MP
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Primary camera resolution2592 x 1944 pixels3264 x 2448 pixels
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Primary camera videovideo1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flashLED flashLED flash
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Camera features-Geo-tagging
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Selfie camera
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Secondary cameraYes-
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Selfie camera5 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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USBYesmicroUSB 2.0
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BluetoothYesv4.0
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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 IMIM-
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Messaging Push Email-Push 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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HTMLYesYes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1400 mAh2000 mAh
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Talk time5 h7 h
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Standby time135 h240 h
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