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Celkon A20 vs T-Mobile Sidekick

Compare recorded specifications, size and practical differences.

Celkon A20

Celkon A20

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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.

  • Screen diagonalSidekick: 1.4 in smaller diagonalSidekick: 2.6 in · A20: 4 in
  • Release year2013 / 2008A20: 2013 · Sidekick: 2008

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 2
Side
Sidekick: 119 × 18 mm 2
  1. 1. A20
    Height
    Unknown
    Width
    Unknown
    Depth
    Unknown
    Weight
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. Sidekick
    Height
    119 mm
    Width
    58 mm
    Depth
    18 mm
    Weight
    128 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.

Screen size
A20: 4 in, 5:3, About 45.5 cm² rectangular area 1 Sidekick: 2.6 in, 5:3, About 19.2 cm² rectangular area 2
  1. 1. A20 4 in · 5:3 About 45.5 cm² rectangular area
  2. 2. Sidekick 2.6 in · 5:3 About 19.2 cm² rectangular area

A20 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.

A20: Original memory entry

256 MB · 512 MB RAM

Sidekick: Original memory entry

128 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. A20

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

2. Sidekick

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

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. A201500 mAh

    +470 mAh versus Sidekick

  2. 2. Sidekick1030 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. A202. Sidekick

Everyday essentials
Everyday essentials
SpecificationA20Sidekick
Dimensions (HxWxD)
  • Х Х mm
  • 119 Х 58 Х 18 mm
Weight
  • 0 g
  • 128 g
Technology
  • TFT
  • TFT
Screen size
  • 4" inch
  • 2.6" inch
Screen resolution
  • 480 x 800 px
  • 240 x 400 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 256 MB
  • 512 MB RAM
  • 128 MB RAM
  • 64 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD (dedicated slot)
BatteryCapacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 1030 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.2.0 (Jelly Bean)
  • Danger 4.7
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationA20Sidekick
Touchscreen
  • capacitive touchscreen
Unknown
Display colors Unknown
  • 65K
Screen area
  • 45.5 cm2
  • 19.2 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio Unknown
  • 27.9%
PPI /points per inch/
  • 233 PPI
  • 179 PPI
Camera and Video
Camera and Video
SpecificationA20Sidekick
Rear camera, main
  • 3.15 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 3.15 MP
  • 1.3 MP
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA
Unknown
Performance
Performance
SpecificationA20Sidekick
Processor CPU
  • Dual-core 1.2 GHz
Unknown
General specs
General specs
SpecificationA20Sidekick
Release date
  • 2013
  • August
  • 2008
  • July
Colors
  • Black
  • Black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
  • 60 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 216 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity
SpecificationA20Sidekick
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Unknown
Speed
  • Yes
  • 384 kbps
Unknown
GPRS
  • Class 12
  • Class 10
Edge
  • Class 12
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • No
  • No
USB
  • microUSB 2.0
  • miniUSB
Bluetooth
  • Yes
  • 2.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.88 W/kg (head) 0.60 W/kg (body)
Unknown
Music and Audio
Music and Audio
SpecificationA20Sidekick
Radio Unknown
  • No
Others Unknown
  • Swivel display
Other features
Other features
SpecificationA20Sidekick
Dop
  • Sensors Proximity
  • gyro
  • MP3/WAV/WMA audio player -MP4 player -Voice memo -Predictive text input

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