A1 Alpha vs Samsung DoubleTime I857

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.

  • Width

    DoubleTime I857: 13.8 mm narrower

    Alpha:
    75.8 mm
    DoubleTime I857:
    62 mm
  • Screen diagonal

    DoubleTime I857: 3.06 in smaller diagonal

    Alpha:
    6.26 in
    DoubleTime I857:
    3.2 in
  • Chipset

    Alpha:
    Unisoc SC9863A (28nm)
    DoubleTime I857:
    Qualcomm MSM7230
  • Rear camera layout

    Alpha:
    Dual
    DoubleTime I857:
    Single
  • Depth

    Alpha: 6.9 mm thinner

    Alpha:
    8.1 mm
    DoubleTime I857:
    15 mm
  • Height

    DoubleTime I857: 38.7 mm shorter

    Alpha:
    151.7 mm
    DoubleTime I857:
    113 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. Alpha

    Height:
    151.7 mm +38.7 mm versus DoubleTime I857
    Width:
    75.8 mm +13.8 mm versus DoubleTime I857
    Depth:
    8.1 mm
  2. 2. DoubleTime I857

    Height:
    113 mm
    Width:
    62 mm
    Depth:
    15 mm +6.9 mm versus Alpha

Weight

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

  1. 1. Alpha

    150 g

    +2 g versus DoubleTime I857

  2. 2. DoubleTime I857

    148 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. Alpha

    Screen diagonal:
    6.26 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    97.8 cm²
  2. 2. DoubleTime I857

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

Alpha has approximately 220.8% 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.

Recorded RAM for Alpha, DoubleTime I857, compared at the same storage capacity.
StorageAlphaDoubleTime I857
32 GB 2 GB RAM Unknown
64 GB 3 GB RAM Unknown
DoubleTime I857: Original memory entry

260 MB · 256 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. Alpha

NFC:
See details Yes (64/3GB model only)
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses shared SIM slot)

2. DoubleTime I857

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. Alpha

    3200 mAh

    +2000 mAh versus DoubleTime I857

  2. 2. DoubleTime I857

    1200 mAh

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. Alpha2. DoubleTime I857

Everyday essentials
Everyday essentials — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Dimensions (HxWxD)
  • 151.7 Х 75.8 Х 8.1 mm
  • 113 Х 62 Х 15 mm
Weight
  • 150 g
  • 148 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 6.26" inch
  • 3.2" inch
Screen resolution
  • 720 x 1520 px
  • 320 x 480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 2GB RAM
  • 64GB 3GB RAM
  • 260 MB
  • 256 MB RAM
Memory card support
  • microSD
  • up to 256 GB (uses shared SIM slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3200 mAh
  • Non-removable Li-Ion
  • 1200 mAh
  • Removable Li-Ion
Operating system OS
  • Android 9.0 (Pie)
  • Android 2.2 (Froyo)
Chipset
  • Unisoc SC9863A (28nm)
  • Qualcomm MSM7230
NFC
  • Yes (64/3GB model only)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 97.8 cm2
  • 30.5 cm2
Screen format
  • 19:9 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 82.1%
  • 43.5%
PPI /points per inch/
  • 269 PPI
  • 180 PPI
Camera and Video
Camera and Video — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Rear camera, main
  • 13 MP
  • Dual
  • 3.15 MP
  • Single
Camera specs
  • 13 MP
  • f/2.0
  • AF -2 MP
  • f/2.4
  • depth sensor
  • 3.15 MP
  • AF
Functions
  • LED flash
  • HDR
Unknown
Video
  • 1080p@30fps
  • 320p
Front camera, selfie
  • 8 MP
  • Single
  • 0 MP,
Specifications
  • 8 MP
  • f/2.0
Unknown
Performance
Performance — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Processor CPU
  • Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55)
  • 800 MHz Scorpion
Graphics processor GPU
  • IMG8322
  • Adreno 205
General specs
General specs — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Release date
  • 2019
  • August
  • 2011
  • October
Colors
  • Black
  • Green
  • Black/White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 70 EUR
Battery life Unknown
  • Stand by time- Up to 250 h Talking time- Up to 6 h
Communication and Connectivity
Communication and Connectivity — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
SIM card
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 38(2600)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 7.2/2 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB On-The-Go
  • microUSB 2.0
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 3.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 0.54 W/kg (head) 0.97 W/kg (body)
Music and Audio
Music and Audio — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Radio
  • FM radio
  • No
Others
  • Active noise cancellation with dedicated mic
  • Secondary TFT capacitive touchscreen (with multitouch)
  • 320 x 480 pixels
  • 3.2 inches
Other features
Other features — specifications for Alpha, DoubleTime I857.
SpecificationAlphaDoubleTime I857
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • 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