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  2. BLU J4 vs O2 XDA Comet

BLU J4 vs O2 XDA Comet

Compare recorded specifications, size and practical differences.

BLU J4

BLU J4

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      Key differences

      Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

      • WeightXDA Comet: 13 g lighterXDA Comet: 145 g · J4: 158 g
      • WidthXDA Comet: 14.3 mm narrowerXDA Comet: 58 mm · J4: 72.3 mm
      • Screen diagonalXDA Comet: 2.8 in smaller diagonalXDA Comet: 2.7 in · J4: 5.5 in
      • DepthJ4: 9 mm thinnerJ4: 10 mm · XDA Comet: 19 mm
      • HeightXDA Comet: 45 mm shorterXDA Comet: 106 mm · J4: 151 mm
      • Release year2019 / 2007J4: 2019 · XDA Comet: 2007

      Physical size

      Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

      Front
      J4: 151 × 72.3 mm 1 XDA Comet: 106 × 58 mm 2
      Side
      J4: 151 × 10 mm 1 XDA Comet: 106 × 19 mm 2
      1. 1. J4
        Height
        151 mm
        Width
        72.3 mm
        Depth
        10 mm
        Weight
        158 g
      2. 2. XDA Comet
        Height
        106 mm
        Width
        58 mm
        Depth
        19 mm
        Weight
        145 g

      Specifications

      Open a section for more detail. Scroll inside a table to keep phone names visible; on narrow screens, swipe sideways or use the arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

      Everyday essentials
      Everyday essentials
      SpecificationJ4XDA Comet
      Dimensions (HxWxD)
      • 151 Х 72.3 Х 10 mm
      • 106 Х 58 Х 19 mm
      Weight
      • 158 g
      • 145 g
      Technology
      • IPS LCD
      • TFT
      Screen size
      • 5.5" inch
      • 2.7" inch
      Screen resolution
      • 720 x 1440 px
      • 240 x 320 px
      Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
      • 32GB 1GB RAM
      • 64 MB RAM
      • 1 GB ROM
      Memory card support
      • microSDXC
      • miniSD
      BatteryCapacity is not battery life. No endurance test is implied.
      • 2200 mAh
      • Removable Li-Po
      • 0 mAh,
      Operating system OS
      • Android 8.1 Oreo (Go edition)
      • Microsoft Windows Mobile 6.0 Professional
      Headphone jack
      • Yes
      • No
      Display
      Display
      SpecificationJ4XDA Comet
      Touchscreen
      • capacitive touchscreen
      • resistive touchscreen
      Display colors
      • 16M
      • 65K
      Screen area
      • 78.1 cm2
      • 22.6 cm2
      Screen format
      • 18:9 (height:width)
      • 4:3 (height:width)
      Screen to body ratio
      • 71.5%
      • 36.7%
      PPI /points per inch/
      • 293 PPI
      • 148 PPI
      Camera and Video
      Camera and Video
      SpecificationJ4XDA Comet
      Rear camera, main
      • 8 MP
      • Single
      • 2 MP
      • Single
      Camera specs
      • 8 MP
      • AF
      • 2 MP
      Functions
      • LED flash
      • LED flash
      Video
      • 720p@30fps
      • Yes
      Front camera, selfie
      • 8 MP
      • Single
      • 0.3 MP
      • Single
      Specifications
      • 8 MP
      • VGA videocall camera
      Performance
      Performance
      SpecificationJ4XDA Comet
      Processor CPU
      • Quad-core 1.3 GHz Cortex-A7
      • Intel XScale PXA 270 620 MHz
      Graphics processor GPU
      • Mali-400
      		 Unknown
      General specs
      General specs
      SpecificationJ4XDA Comet
      Release date
      • 2019
      • October
      • 2007
      • September
      Colors
      • Blue
      • Black
      • Brown
      • Silver
      Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
      • 70 EUR
      		 Unknown
      Battery life Unknown
      • Stand by time- Up to 200 h Talking time- Up to 6 h
      Communication and Connectivity
      Communication and Connectivity
      SpecificationJ4XDA Comet
      SIM card
      • Dual SIM (Nano-SIM
      • dual stand-by)
      • Mini-SIM
      Network
      • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
      • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
      Speed
      • HSPA 21.1/5.76 Mbps
      • HSPA
      GPRS
      • Yes
      • Class 10
      Edge
      • Yes
      • Yes
      Wi-Fi
      • Wi-Fi 802.11 b/g/n
      • Wi-Fi Direct
      • hotspot
      • Wi-Fi 802.11b/g
      GPS
      • Yes
      • with A-GPS
      • No
      USB
      • microUSB 2.0
      • miniUSB
      Bluetooth
      • 4.1
      • A2DP
      • LE
      • 1.2
      Music and Audio
      Music and Audio
      SpecificationJ4XDA Comet
      Radio
      • FM radio
      • Stereo FM radio
      • RDS
      Others Unknown
      • Handwriting recognition
      Other features
      Other features
      SpecificationJ4XDA Comet
      Dop
      • Sensors Accelerometer For USA
      • Infrared port - Pocket Office -Voice memo -MP3/AAC player

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