Acer DX650 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.

  • Weight

    DX650: 15 g lighter

    DX650:
    133 g
    DoubleTime I857:
    148 g
  • Width

    DX650: 3 mm narrower

    DX650:
    59 mm
    DoubleTime I857:
    62 mm
  • Screen diagonal

    DX650: 0.4 in smaller diagonal

    DX650:
    2.8 in
    DoubleTime I857:
    3.2 in
  • Depth

    DoubleTime I857: 0.6 mm thinner

    DX650:
    15.6 mm
    DoubleTime I857:
    15 mm
  • Height

    DX650: 3.4 mm shorter

    DX650:
    109.6 mm
    DoubleTime I857:
    113 mm
  • Release year

    DX650:
    2009
    DoubleTime I857:
    2011

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. DX650

    Height:
    109.6 mm
    Width:
    59 mm
    Depth:
    15.6 mm +0.6 mm versus DoubleTime I857
  2. 2. DoubleTime I857

    Height:
    113 mm +3.4 mm versus DX650
    Width:
    62 mm +3 mm versus DX650
    Depth:
    15 mm

Weight

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

  1. 1. DX650

    133 g

  2. 2. DoubleTime I857

    148 g

    +15 g versus DX650

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. DX650

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. DoubleTime I857

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

DoubleTime I857 has approximately 25.6% more rectangular screen area than DX650.

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.

DX650: Original memory entry

Super AMOLED

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. DX650

NFC:
See details Super AMOLED
Headphone jack:
See details panorama
Memory card support:
See details microSD (dedicated 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. DX650

    1260 mAh

    +60 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. DX6502. DoubleTime I857

Everyday essentials
Everyday essentials — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Dimensions (HxWxD)
  • 109.6 Х 59 Х 15.6 mm
  • 113 Х 62 Х 15 mm
Weight
  • 133 g
  • 148 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 3.2" inch
Screen resolution
  • 240 x 320 px
  • 320 x 480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • Super AMOLED
  • 260 MB
  • 256 MB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1260 mAh
  • Removable Li-Ion
  • 1200 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 2.2 (Froyo)
Chipset Unknown
  • Qualcomm MSM7230
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 256K
Screen area
  • 24.3 cm2
  • 30.5 cm2
Screen format
  • 4:3 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 37.5%
  • 43.5%
PPI /points per inch/
  • 143 PPI
  • 180 PPI
Camera and Video
Camera and Video — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Rear camera, main
  • 2 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 2 MP
  • 3.15 MP
  • AF
Video
  • panorama
  • 320p
Front camera, selfie
  • 0 MP,
  • 0 MP,
Specifications
  • Super AMOLED
Unknown
Performance
Performance — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Processor CPU
  • Samsung S3C 6410 533 MHz
  • 800 MHz Scorpion
Graphics processor GPU Unknown
  • Adreno 205
General specs
General specs — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Release date
  • 2009
  • June
  • 2011
  • October
Colors
  • Black
  • Black/White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 70 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to 4 h
  • Stand by time- Up to 250 h Talking time- Up to 6 h
Communication and Connectivity
Communication and Connectivity — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • Super AMOLED
  • HSPA 7.2/2 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • Yes
  • SiRF Star III chipset
  • Yes
  • with A-GPS
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • microUSB 2.0
  • A2DP
  • 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 DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Radio
  • FM radio
  • No
Others
  • Secondary 1.27'' OLED display (128 x 96 pixel resolution) -Handwriting recognition
  • Secondary TFT capacitive touchscreen (with multitouch)
  • 320 x 480 pixels
  • 3.2 inches
Other features
Other features — specifications for DX650, DoubleTime I857.
SpecificationDX650DoubleTime I857
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player
  • 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