Oppo A57 vs T-Mobile Sidekick LX

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

    A57: 15 g lighter

    A57:
    147 g
    Sidekick LX:
    162 g
  • Width

    Sidekick LX: 12.9 mm narrower

    A57:
    72.9 mm
    Sidekick LX:
    60 mm
  • Screen diagonal

    Sidekick LX: 2.2 in smaller diagonal

    A57:
    5.2 in
    Sidekick LX:
    3 in
  • Depth

    A57: 14.3 mm thinner

    A57:
    7.7 mm
    Sidekick LX:
    22 mm
  • Height

    Sidekick LX: 19.6 mm shorter

    A57:
    149.1 mm
    Sidekick LX:
    129.5 mm
  • Release year

    A57:
    2016
    Sidekick LX:
    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.

  1. 1. A57

    Height:
    149.1 mm +19.6 mm versus Sidekick LX
    Width:
    72.9 mm +12.9 mm versus Sidekick LX
    Depth:
    7.7 mm
  2. 2. Sidekick LX

    Height:
    129.5 mm
    Width:
    60 mm
    Depth:
    22 mm +14.3 mm versus A57

Weight

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

  1. 1. A57

    147 g

  2. 2. Sidekick LX

    162 g

    +15 g versus A57

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. A57

    Screen diagonal:
    5.2 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    74.5 cm²
  2. 2. Sidekick LX

    Screen diagonal:
    3 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    25.6 cm²

A57 has approximately 191% more rectangular screen area than Sidekick LX.

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 A57, Sidekick LX, compared at the same storage capacity.
StorageA57Sidekick LX
32 GB 3 GB RAM Unknown
Sidekick LX: Original memory entry

64 MB RAM · 64 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. A57

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB

2. Sidekick LX

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. A57

    2900 mAh

    +1360 mAh versus Sidekick LX

  2. 2. Sidekick LX

    1540 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. A572. Sidekick LX

Everyday essentials
Everyday essentials — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Dimensions (HxWxD)
  • 149.1 Х 72.9 Х 7.7 mm
  • 129.5 Х 60 Х 22 mm
Weight
  • 147 g
  • 162 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.2" inch
  • 3" inch
Screen resolution
  • 720 x 1280 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM
  • 64 MB RAM
  • 64 MB ROM
Memory card support
  • microSD
  • up to 256 GB
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2900 mAh
  • Non-removable Li-Ion
  • 1540 mAh
  • Removable Li-Ion
Operating system OS
  • Android 6 (Marshmallow); ColorOS 3
  • Danger OS
Chipset
  • Qualcomm MSM8940 Snapdragon 435 (28 nm)
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 16M
  • 65K
Screen area
  • 74.5 cm2
  • 25.6 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 68.6%
  • 33.0%
PPI /points per inch/
  • 282 PPI
  • 155 PPI
Screen protection
  • Corning Gorilla Glass 4
Unknown
Camera and Video
Camera and Video — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Rear camera, main
  • 13 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 13 MP
  • PDAF
  • f/2.2
  • 1.3 MP
Functions
  • LED flash
  • HDR
  • panorama
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 16 MP
  • Single
  • 0 MP,
Specifications
  • 16 MP
  • f/2.0
  • 1.12µm
  • AF
Unknown
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Processor CPU
  • Octa-core 1.4 GHz Cortex-A53
Unknown
Graphics processor GPU
  • Adreno 505
Unknown
Antutu 7 score *
  • 46782
Unknown
GeekBench 4 Single Core *
  • 657
Unknown
GeekBench 4 Multi-Core *
  • 2764
Unknown
GeekBench 4 RenderScript *
  • 2302
Unknown
General specs
General specs — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Release date
  • 2016
  • November
  • 2007
  • September
Colors
  • Black
  • Gold
  • Rose Gold
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 200 EUR
  • 160 EUR
Battery life Unknown
  • Stand by time- Up to 96 h Talking time- Up to 6 h 50 min
Body build
  • Front glass
  • aluminum body
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
SIM card
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 28(700)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Unknown
Speed
  • HSPA
  • LTE
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • USB Host
  • Proprietary
Bluetooth
  • 4.1
  • A2DP
  • 2.0
Harmful irradiation Unknown
  • SAR - 0.40 W/kg (head) 0.46 W/kg (body)
Music and Audio
Music and Audio — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Radio
  • FM radio
  • No
Other features
Other features — specifications for A57, Sidekick LX.
SpecificationA57Sidekick LX
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • proximity
  • compass - Also known as Oppo F3 Lite in Vietnam
  • MP3/WMA audio player -MP4 player -Voice memo