Celkon A21 vs ZTE Boost MAX+
Celkon A21
ZTE Boost MAX+
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100HSDPA
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HSDPA speedHSDPA-
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HSPA speed-HSPA
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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 announced2014-122015-7
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Status2014-122015-7
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Design
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SIMDual SIM (dual stand-by)Yes
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Height124.8 mm165.1 mm
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Width66.1 mm82.6 mm
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Thickness10.8 mm10.2 mm
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Weight115.3 g194.8 g
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ColorsBlack, Blue, RedGold
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Display
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Display typeCapacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.0 inches5.7 inches
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Resolution320 x 480 pixels720 x 1280 pixels
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Pixel density144 ppi258 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
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ChipsetMediatek MT6582-
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Memory ROM512 MB-
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Memory RAM256 MB2 GB
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Internal storage-16 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, v4.2.2 (Jelly Bean)Android OS, v5.1 (Lollipop)
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Main camera
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Main camera3.15 MP8 MP
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Primary camera resolution-3264 x 2448 pixels
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Primary camera videovideo1080p@30fps
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Camera features-Yes
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Selfie camera
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Selfie camera1.3 MP1 MP
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Selfie camera video-720p
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration, Polyphonic, MP3 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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Bluetoothv4.0Yes
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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 IM-IM
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Messaging Push Email-Push Email
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JavaYes, via Java MIDP emulatorNo
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Sensors-Yes
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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 capacity1500 mAh3400 mAh
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Battery removable-Non-removable
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Talk time 3G8 h16 h
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Standby time--
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Standby time 3G120 h-
