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Alcatel OT-991
Compare Alcatel OT-991 and Celkon C820

Alcatel OT-991 vs Celkon C820

Alcatel OT-991
Alcatel OT-991
Celkon C820
Celkon C820
Alcatel OT-991
Celkon C820
  • Network
  • 2G network
    GSM 850, 900, 1800, 1900
    GSM 900, 1800
  • 3G network
    HSDPA 850, 1900, 2100
    HSDPA 2100
  • HSDPA speed
    HSDPA, 7.2 Mbps
    HSDPA
  • HSUPA speed
    -
    HSUPA
  • GPRS
    Yes
    Yes
  • EDGE
    Yes
    Yes
  • Availability
  • Oficially announced
    2012-2
    2014-12
  • Status
    2012
  • Design
  • SIM
    Mini-SIM
    Dual SIM
  • Height
    122 mm
    210 mm
  • Width
    68 mm
    131 mm
  • Thickness
    10.8 mm
    10.5 mm
  • Weight
    131.3 g
  • Colors
    Black, White
    Black, Silver
  • Display
  • Display type
    TFT capacitive touchscreen
    Capacitive touchscreen
  • Physical size
    4.0 inches
    8.0 inches
  • Resolution
    320 x 480 pixels
    800 x 1280 pixels
  • Pixel density
    144 ppi
    189 ppi
  • Display colors
    262144
    -
  • Hardware
  • CPU
    800 MHz ARM Cortex-A9
    1 GHz Dual-core
  • Chipset
    Mediatek MT6573
    -
  • GPU
    PowerVR SGX531
    -
  • Internal storage
    150 MB
    4 GB
  • Memory RAM
    -
    512 MB
  • Memory card
    microSD
    microSD
  • Memory card max
    32 GB
    32 GB
  • OS
  • OS
    Android OS, v2.3 (Gingerbread)
    Android OS, v4.2.2 (Jelly Bean)
  • Main camera
  • Main camera
    3.15 MP
    3.15 MP
  • Primary camera resolution
    2048 x 1536 pixels
    2048 x 1536 pixels
  • Primary camera video
    video
    video
  • Primary camera flash
    LED flash
    -
  • Selfie camera
  • Secondary camera
    Yes
    -
  • Selfie camera
    1.3 MP
  • Sound
  • 3.5mm jack
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
  • Notifications
    Vibration; MP3 ringtones
    Vibration, Polyphonic, MP3 ringtones
  • Multimedia
  • Radio FM
    Stereo FM radio with RDS
    FM radio
  • Connectivity
  • WLAN
    Wi-Fi 802.11b, 802.11g, 802.11n
    Wi-Fi 802.11b, 802.11g, 802.11n
  • WLAN WiFi Hotspot
    Yes
    Yes
  • USB
    microUSB 2.0
    microUSB 2.0
  • Bluetooth
    v4.0
    Yes
  • Bluetooth A2DP
    Yes
    -
  • GPS
    Yes, with A-GPS
    Yes
  • Features
  • Messaging SMS
    SMS(threaded view)
    SMS(threaded view)
  • Messaging MMS
    MMS
    MMS
  • Messaging Email
    Email
    Email
  • Messaging IM
    IM
    IM
  • WAP
    WAP 2.0/xHTML
    -
  • Java
    Yes, via Java MIDP emulator
    Yes, via Java MIDP emulator
  • Browser
  • HTML
    Yes
    Yes
  • Battery
  • Battery type
    Li-Ion
    Li-Ion
  • Battery capacity
    1500 mAh
    4000 mAh
  • Battery removable
    -
    Non-removable
  • Talk time
    -
    14 h
  • Talk time 2G
    12 h
    -
  • Talk time 3G
    10 h
    -
  • Standby time
    400 h
    500 h

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