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T-Mobile Sidekick vs Xolo A42

Compare recorded specifications, size and practical differences.

Xolo A42

Xolo A42

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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.

  • WidthSidekick: 5.5 mm narrowerSidekick: 58 mm · A42: 63.5 mm
  • Screen diagonalSidekick: 1.4 in smaller diagonalSidekick: 2.6 in · A42: 4 in
  • DepthA42: 7.8 mm thinnerA42: 10.2 mm · Sidekick: 18 mm
  • HeightSidekick: 5.5 mm shorterSidekick: 119 mm · A42: 124.5 mm
  • Release year2008 / 2014Sidekick: 2008 · A42: 2014

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.

Front
Sidekick: 119 × 58 mm 1 A42: 124.5 × 63.5 mm 2
Side
Sidekick: 119 × 18 mm 1 A42: 124.5 × 10.2 mm 2
  1. 1. Sidekick
    Height
    119 mm
    Width
    58 mm
    Depth
    18 mm+7.8 mm versus A42
    Weight
    128 g
  2. 2. A42
    Height
    124.5 mm+5.5 mm versus Sidekick
    Width
    63.5 mm+5.5 mm versus Sidekick
    Depth
    10.2 mm
    Weight
    Unknown

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.

Screen size
Sidekick: 2.6 in, 5:3, About 19.2 cm² rectangular area 1 A42: 4 in, 5:3, About 45.5 cm² rectangular area 2
  1. 1. Sidekick 2.6 in · 5:3 About 19.2 cm² rectangular area
  2. 2. A42 4 in · 5:3 About 45.5 cm² rectangular area

A42 has approximately 136.7% more rectangular screen area than Sidekick.

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.

Sidekick: Original memory entry

128 MB RAM · 64 MB ROM

A42: 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. Sidekick

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSD (dedicated slot)

2. A42

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSD · up to 32 GB

Battery capacity

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

Recorded capacity

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

  1. 1. Sidekick1030 mAh
  2. 2. A421400 mAh

    +370 mAh versus Sidekick

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. Sidekick2. A42

Everyday essentials
Everyday essentials
SpecificationSidekickA42
Dimensions (HxWxD)
  • 119 Х 58 Х 18 mm
  • 124.5 Х 63.5 Х 10.2 mm
Weight
  • 128 g
  • 0 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.6" inch
  • 4" inch
Screen resolution
  • 240 x 400 px
  • 480 x 800 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 64 MB ROM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 32 GB
BatteryCapacity is not battery life. No endurance test is implied.
  • 1030 mAh
  • Removable Li-Ion
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Danger 4.7
  • Android 4.2.2 (Jelly Bean)
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationSidekickA42
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 19.2 cm2
  • 45.5 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 27.9%
  • 57.6%
PPI /points per inch/
  • 179 PPI
  • 233 PPI
Camera and Video
Camera and Video
SpecificationSidekickA42
Rear camera, main
  • 1.3 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 1.3 MP
  • 5 MP
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 1.3 MP
  • Single
Specifications Unknown
  • 1.3 MP
Performance
Performance
SpecificationSidekickA42
Processor CPU Unknown
  • Dual-core 1.3 GHz
General specs
General specs
SpecificationSidekickA42
Release date
  • 2008
  • July
  • 2014
  • July
Colors
  • Black
  • Yellow
  • Blue
  • White
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer. Unknown
  • 80 EUR
Battery life
  • Stand by time- Up to 216 h Talking time- Up to 5 h
  • Stand by time- Up to 180 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity
SpecificationSidekickA42
SIM card
  • Mini-SIM
  • Dual SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed Unknown
  • HSPA
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
USB
  • miniUSB
  • microUSB
Bluetooth
  • 2.0
  • A2DP
  • 2.0
Harmful irradiation Unknown
  • SAR EU - 0.69 W/kg (head) 0.71 W/kg (body)
Music and Audio
Music and Audio
SpecificationSidekickA42
Radio
  • No
  • FM radio
Others
  • Swivel display
Unknown
Other features
Other features
SpecificationSidekickA42
Dop
  • MP3/WAV/WMA audio player -MP4 player -Voice memo -Predictive text input
  • Sensors Accelerometer
  • proximity