Celkon A21 vs XOLO X910
Celkon A21
XOLO X910
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900
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3G networkHSDPA 2100HSDPA 850, 900, 1900, 2100
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HSDPA speedHSDPAHSDPA, 21 Mbps
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HSUPA speed-HSUPA, 11.5 Mbps
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2014-122013-5
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Status2014-122013-5
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Design
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SIMDual SIM (dual stand-by)Dual SIM (Mini-SIM)
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Height124.8 mm126 mm
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Width66.1 mm64.7 mm
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Thickness10.8 mm10 mm
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Weight115.3 g150 g
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ColorsBlack, Blue, RedBlack, White
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Display
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Display typeCapacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.0 inches4.3 inches
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Resolution320 x 480 pixels540 x 960 pixels
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Pixel density144 ppi256 ppi
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Display colors-16777216
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Hardware
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CPUDual-core 1.2 GHz1.6 GHz
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ChipsetMediatek MT6582Intel Atom Z2460
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Memory ROM512 MB-
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Memory RAM256 MB1 GB
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Internal storage-4 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB32 GB
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OS
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OSAndroid OS, v4.2.2 (Jelly Bean)Android OS, v4.0.4 (Ice Cream Sandwich)
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Main camera
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Main camera3.15 MP5 MP
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Primary camera resolution-2592 x 1944 pixels
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Primary camera videovideo1080p@30fps
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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 camera-VGA 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, Polyphonic, MP3 ringtonesVibration, MP3 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 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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USBYesmicroUSB 2.0
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Bluetoothv4.0v2.1
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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 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 capacity1500 mAh2000 mAh
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Talk time--
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Talk time 3G8 h-
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Standby time--
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Standby time 3G120 h-
