Samsung DoubleTime I857 vs Vodafone Smart first 7

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

    Smart first 7: 38 g lighter

    DoubleTime I857:
    148 g
    Smart first 7:
    110 g
  • Screen diagonal

    DoubleTime I857: 0.3 in smaller diagonal

    DoubleTime I857:
    3.2 in
    Smart first 7:
    3.5 in
  • Chipset

    DoubleTime I857:
    Qualcomm MSM7230
    Smart first 7:
    Spreadtrum SC7731G
  • Depth

    Smart first 7: 3 mm thinner

    DoubleTime I857:
    15 mm
    Smart first 7:
    12 mm
  • Release year

    DoubleTime I857:
    2011
    Smart first 7:
    2016

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. DoubleTime I857

    Height:
    113 mm
    Width:
    62 mm
    Depth:
    15 mm +3 mm versus Smart first 7
  2. 2. Smart first 7

    Height:
    114.4 mm
    Width:
    62.8 mm
    Depth:
    12 mm

Weight

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

  1. 1. DoubleTime I857

    148 g

    +38 g versus Smart first 7

  2. 2. Smart first 7

    110 g

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. DoubleTime I857

    Screen diagonal:
    3.2 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    30.5 cm²
  2. 2. Smart first 7

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

Smart first 7 has approximately 19.6% more rectangular screen area than DoubleTime I857.

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.

DoubleTime I857: Original memory entry

260 MB · 256 MB RAM

Smart first 7: Original memory entry

4 GB · 512 MB RAM

Practical features

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

1. DoubleTime I857

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

2. Smart first 7

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB (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. DoubleTime I857

    1200 mAh

  2. 2. Smart first 7

    1400 mAh

    +200 mAh versus DoubleTime I857

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. DoubleTime I8572. Smart first 7

Everyday essentials
Everyday essentials — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Dimensions (HxWxD)
  • 113 Х 62 Х 15 mm
  • 114.4 Х 62.8 Х 12 mm
Weight
  • 148 g
  • 110 g
Technology
  • TFT
  • TFT TN
Screen size
  • 3.2" inch
  • 3.5" inch
Screen resolution
  • 320 x 480 px
  • 320 x 480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 260 MB
  • 256 MB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 64 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 1400 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.2 (Froyo)
  • Android 5.1 (Lollipop)
Chipset
  • Qualcomm MSM7230
  • Spreadtrum SC7731G
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
Unknown
Screen area
  • 30.5 cm2
  • 36.5 cm2
Screen format
  • 3:2 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 43.5%
  • 50.8%
PPI /points per inch/
  • 180 PPI
  • 165 PPI
Camera and Video
Camera and Video — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Rear camera, main
  • 3.15 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 2 MP
Video
  • 320p
  • 720p@30fps
Front camera, selfie
  • 0 MP,
  • 0 MP,
Performance
Performance — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Processor CPU
  • 800 MHz Scorpion
  • Quad-core 1.3 GHz Cortex-A7
Graphics processor GPU
  • Adreno 205
  • Mali-400MP2
General specs
General specs — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Release date
  • 2011
  • October
  • 2016
  • May
Colors
  • Black/White
  • Volcano Black
  • Tech White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 30 EUR
Battery life
  • Stand by time- Up to 250 h Talking time- Up to 6 h
  • Talking time- Up to 5 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
SIM card
  • Mini-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 900 / 1800
Speed
  • HSPA 7.2/2 Mbps
  • HSPA 21.1/5.76 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • A-GPS only
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 3.0
  • A2DP
  • 2.1
  • A2DP
Harmful irradiation
  • SAR - 0.54 W/kg (head) 0.97 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Radio
  • No
  • FM radio
Others
  • Secondary TFT capacitive touchscreen (with multitouch)
  • 320 x 480 pixels
  • 3.2 inches
Unknown
Other features
Other features — specifications for DoubleTime I857, Smart first 7.
SpecificationDoubleTime I857Smart first 7
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -Photo/video editor -Document viewer -Voice memo/dial/commands -Predictive text input - For AT&T
  • Sensors No