Celkon A66 vs Panasonic T31

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          General Info

          Manufacturer
          Celkon Panasonic
          Announced
          October 2013 October 2013
          Status
          Available - October 2013 Available - November 2013
          Colors
          Black Bluish Black, Pure White
          Form Factor
          Candybar Candybar
          Dimension
          136 x 67.2 x 11 mm
          (5.35 x 2.65 x 0.43 in)
          122 x 64.4 x 11.95 mm
          (4.8 x 2.54 x 0.47 in)
          Weight
          98 g (3.46 oz) 120 g (4.23 oz)
          2G Network
          GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
          3G Network
          No HSDPA 850 / 1900 / 2100
          Messaging
          SMS, MMS, EMail, IM SMS, MMS, EMail, IM

          Hardware and OS

          OS
          Android OS, v4.1.2 (Jelly Bean) Android OS, v4.2.2 (Jelly Bean) with FOTA upgrade
          Processor
          Dual-core 1.2 GHz, MTK 6572 [Similar] Dual-core 1.3 GHz, MTK 6572 [Similar]
          GPU
          Mali-400 [Similar] Mali-400 [Similar]
          RAM
          512 MB [Browse Similar] 512 MB [Browse Similar]
          Internal Memory
          4 GB ROM 4 GB (1.9 GB user memory)
          External Memory
          microSD, up to 32 GB microSD, up to 32 GB

          Display

          Type
          TFT capacitive touchscreen TFT capacitive touchscreen
          Colors
          - 16M colors
          Size
          4.5 inches [Similar] 4.0 inches [Similar]
          Resolution
          480 x 854 pixels (218 ppi) [Similar] 480 x 800 pixels (233 ppi) [Similar]
          Screen-to-Body Ratio
          60.89% 58.08%
          Multi-Touch
          yes multi touch yes multi touch

          Camera

          Rear Camera
          3.2 MP, 2048x1536 pixels [Similar] 3.2 MP, 2048x1536 pixels [Similar]
          Flash
          No No
          Features
          Fixed Focus, Geo-tagging Fixed Focus, Geo-tagging
          Video
          Yes, 720p Yes, VGA@30fps
          Front Camera
          Yes, VGA [Similar] Yes, VGA [Similar]

          Multimedia

          3.5mm Jack
          3.5 mm jack yes 3.5 mm jack yes
          Radio
          FM radio FM Radio with Recording
          Games
          Yes + Downloadable Yes + Downloadable
          Loud Speaker
          loudspeaker yes loudspeaker yes

          Connectivity and Data Rate

          GPRS
          Class 10 (4+1/3+2 slots), 32 - 48 kbps Yes
          Edge
          Class 10, 236.8 kbps Yes
          3G
          No HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
          Bluetooth
          Yes, v2.0 A2DP, EDR Yes, v4.0 with A2DP
          Wi-Fi
          Wi-Fi 802.11 b/g/n, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot
          USB
          Yes, microUSB v2.0 Yes, microUSB v2.0
          GPS
          Yes, with A-GPS support Yes, with A-GPS support
          Browser
          HTML HTML5

          User Memory

          Internal
          4 GB ROM, 512 MB RAM 4 GB (1.9 GB user memory), 512 MB RAM
          Expandable Storage
          microSD, up to 32 GB microSD, up to 32 GB

          Sensors

          Fingerprint
          fingerprint not supported fingerprint not supported
          Proximity Sensor
          proximity sensor present proximity sensor present
          Accelerometer Sensor
          accelerometer sensor present accelerometer sensor present
          NFC
          NFC not supported NFC not supported

          Battery

          Type
          Li-Po Battery Li-Ion Battery
          Capacity
          2000 mAh 1300 mAh
          Stand by
          - Up to 510 h (2G)
          Up to 400 h (3G)
          Talk Time
          - Up to 3 h 30 min (2G)
          Up to 9 h 30 min (3G)

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