BLU Dash 3.5 vs O2 XDA Serra

Compare recorded specifications, size and practical differences.

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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.

  • Weight

    Dash 3.5: 55 g lighter

    Dash 3.5:
    110 g
    XDA Serra:
    165 g
  • Width

    XDA Serra: 11 mm narrower

    Dash 3.5:
    62 mm
    XDA Serra:
    51 mm
  • Screen diagonal

    XDA Serra: 0.7 in smaller diagonal

    Dash 3.5:
    3.5 in
    XDA Serra:
    2.8 in
  • Chipset

    Dash 3.5:
    Mediatek MT6572M (28 nm)
    XDA Serra:
    Qualcomm MSM7201A
  • Depth

    Dash 3.5: 6.6 mm thinner

    Dash 3.5:
    11.5 mm
    XDA Serra:
    18.1 mm
  • Height

    XDA Serra: 13 mm shorter

    Dash 3.5:
    115 mm
    XDA Serra:
    102 mm

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.

  1. 1. Dash 3.5

    Height:
    115 mm +13 mm versus XDA Serra
    Width:
    62 mm +11 mm versus XDA Serra
    Depth:
    11.5 mm
  2. 2. XDA Serra

    Height:
    102 mm
    Width:
    51 mm
    Depth:
    18.1 mm +6.6 mm versus Dash 3.5

Weight

Bars start at zero and share a scale within this chart.

  1. 1. Dash 3.5

    110 g

  2. 2. XDA Serra

    165 g

    +55 g versus Dash 3.5

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

  1. 1. Dash 3.5

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²
  2. 2. XDA Serra

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²

Dash 3.5 has approximately 50.2% more rectangular screen area than XDA Serra.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Dash 3.5: Original memory entry

512 MB · 256 MB RAM

XDA Serra: Original memory entry

288 MB RAM · 512 MB ROM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Dash 3.5

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. XDA Serra

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. Dash 3.5

    1300 mAh

  2. 2. XDA Serra

    1340 mAh

    +40 mAh versus Dash 3.5

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Dash 3.52. XDA Serra

Everyday essentials
Everyday essentials — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Dimensions (HxWxD)
  • 115 Х 62 Х 11.5 mm
  • 102 Х 51 Х 18.1 mm
Weight
  • 110 g
  • 165 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 2.8" inch
Screen resolution
  • 320 x 480 px
  • 480 x 640 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 288 MB RAM
  • 512 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1300 mAh
  • Removable Li-Ion
  • 1340 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.2 (Jelly Bean)
  • Microsoft Windows Mobile 6.1 Professional
Chipset
  • Mediatek MT6572M (28 nm)
  • Qualcomm MSM7201A
Headphone jack
  • Yes
  • No
Display
Display — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 36.5 cm2
  • 24.3 cm2
Screen format
  • 3:2 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 51.2%
  • 46.7%
PPI /points per inch/
  • 165 PPI
  • 286 PPI
Camera and Video
Camera and Video — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Rear camera, main
  • 3.15 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 3.15 MP
  • 3.15 MP
  • AF
Functions Unknown
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications Unknown
  • VGA videocall camera
Performance
Performance — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Processor CPU
  • Dual-core 1.0 GHz Cortex-A7
  • 528 MHz ARM 11
Graphics processor GPU
  • Mali-400
  • Adreno 130
General specs
General specs — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Release date
  • 2012
  • September
  • 2008
  • July
Colors
  • Black
  • White
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
Unknown
Battery life
  • Stand by time- Up to 700 h (2G) / Up to 500 h (3G) Talking time- Up to 15 h (2G) / Up to 10 h (3G)
  • Stand by time- Up to 406 h Talking time- Up to 8 h
Communication and Connectivity
Communication and Connectivity — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
SIM card
  • Dual SIM (Mini-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 850 / 900 / 1800 / 1900
Speed
  • HSPA 7.2/5.76 Mbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Class 12
  • Class 10
Edge
  • Class 12
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • miniUSB
Bluetooth
  • 4.0
  • A2DP
  • 2.0
  • A2DP
Music and Audio
Music and Audio — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Radio
  • Stereo FM radio
  • Stereo FM radio
  • RDS
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for Dash 3.5, XDA Serra.
SpecificationDash 3.5XDA Serra
Dop
  • Sensors Accelerometer MP3/AAC/WMA/WAV player -DivX/XviD/MP4/H.264/WMV player -Document viewer/editor -Photo viewer/editor D161 Single SIM D171 Dual SIM
  • Sensors Accelerometer MP3/WAV/WMA player -MP4/WMV/3gp player -Pocket Office -Voice memo -Predictive text input