BLU Advance 4.0 L vs Celkon A21
BLU Advance 4.0 L
Celkon A21
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800
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3G networkHSDPA 850, 1700(AWS), 1900HSDPA 2100
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HSDPA speed21.1 MbpsHSDPA
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HSUPA speed5.76 Mbps-
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2015-52014-12
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Status2015-52014-12
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Design
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SIMDual SIM (Mini-SIM, dual stand-by)Dual SIM (dual stand-by)
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Height128 mm124.8 mm
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Width66 mm66.1 mm
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Thickness11 mm10.8 mm
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Weight121 g115.3 g
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ColorsBlack, WhiteBlack, Blue, Red
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Display
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Display typeTFT capacitive touchscreenCapacitive touchscreen
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Physical size4.0 inches4.0 inches
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Resolution480 x 800 pixels320 x 480 pixels
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Pixel density233 ppi144 ppi
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Display colors16777216-
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Hardware
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CPUDual-core 1.3 GHz ARM Cortex-A7Dual-core 1.2 GHz
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ChipsetMediatek MT6572Mediatek MT6582
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GPUMali-400-
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Memory ROM-512 MB
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Memory RAM512 MB256 MB
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Internal storage4 GB-
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Memory cardmicroSDmicroSD
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Memory card max64 GB32 GB
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OS
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OSAndroid OS, v4.4 (KitKat)Android OS, v4.2.2 (Jelly Bean)
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Main camera
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Main camera2 MP3.15 MP
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Primary camera resolution1600 x 1200 pixels-
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Primary camera video720@30fpsvideo
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Primary camera flashLED flash-
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Camera featuresGeo-tagging-
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Selfie camera
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Secondary cameraVGA camera-
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Selfie camera1.3 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, Polyphonic, MP3 ringtones
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Multimedia
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Radio FMStereo FM radioFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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WLAN WiFi HotspotYes-
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USBmicroUSB 2.0Yes
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Bluetoothv4.0v4.0
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GPSYes, with A-GPSNo
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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 EmailPush Email-
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometer-
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1300 mAh1500 mAh
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Talk time 2G17 h-
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Talk time 3G12 h8 h
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Standby time 2G700 h-
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Standby time 3G500 h120 h
