T-Mobile Sidekick 4G vs Toshiba K01

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

    Sidekick 4G: 4 mm narrower

    Sidekick 4G:
    61 mm
    K01:
    65 mm
  • Screen diagonal

    Sidekick 4G: 0.6 in smaller diagonal

    Sidekick 4G:
    3.5 in
    K01:
    4.1 in
  • Depth

    K01: 2.1 mm thinner

    Sidekick 4G:
    15 mm
    K01:
    12.9 mm
  • Height

    K01: 5 mm shorter

    Sidekick 4G:
    127 mm
    K01:
    122 mm
  • Release year

    Sidekick 4G:
    2011
    K01:
    2010

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. Sidekick 4G

    Height:
    127 mm +5 mm versus K01
    Width:
    61 mm
    Depth:
    15 mm +2.1 mm versus K01
  2. 2. K01

    Height:
    122 mm
    Width:
    65 mm +4 mm versus Sidekick 4G
    Depth:
    12.9 mm

Weight

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

  1. 1. Sidekick 4G

    162 g

    +4 g versus K01

  2. 2. K01

    158 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. Sidekick 4G

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    34.9 cm²
  2. 2. K01

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

K01 has approximately 37.2% more rectangular screen area than Sidekick 4G.

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 4G: Original memory entry

1 GB · 512 MB RAM

K01: Original memory entry

256 MB RAM · 512 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. Sidekick 4G

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot) · 2 GB included

2. K01

NFC:
Unknown
Headphone jack:
No
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. Sidekick 4G

    1500 mAh

    +500 mAh versus K01

  2. 2. K01

    1000 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. Sidekick 4G2. K01

Everyday essentials
Everyday essentials — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Dimensions (HxWxD)
  • 127 Х 61 Х 15 mm
  • 122 Х 65 Х 12.9 mm
Weight
  • 162 g
  • 158 g
Technology
  • TFT
  • AMOLED
Screen size
  • 3.5" inch
  • 4.1" inch
Screen resolution
  • 480 x 800 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 1 GB
  • 512 MB RAM
  • 256 MB RAM
  • 512 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • 2 GB included
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 1000 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.2 (Froyo)
  • Microsoft Windows Mobile 6.5 Professional
  • upgradable to Windows Mobile 6.5.3
Chipset
  • Hummingbird
  • Qualcomm QSD8250 Snapdragon S1
Headphone jack
  • Yes
  • No
Display
Display — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 34.9 cm2
  • 47.8 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 45.0%
  • 60.3%
PPI /points per inch/
  • 267 PPI
  • 228 PPI
Camera and Video
Camera and Video — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Rear camera, main
  • 3.15 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 3.15 MP
  • AF
Video
  • 480p@30fps
  • 480p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • VGA
Unknown
Performance
Performance — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Processor CPU
  • 1.0 GHz Cortex-A8
  • 1.0 GHz Scorpion
Graphics processor GPU
  • PowerVR SGX540
  • Adreno 200
General specs
General specs — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Release date
  • 2011
  • March
  • 2010
  • February
Colors
  • Matte Black
  • Pearl magenta
  • Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 310 EUR
Unknown
Battery life
  • Stand by time- Up to 456 h Talking time- Up to 6 h 30 min
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
SIM card
  • Mini-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 7.2/5.76 Mbps
  • HSPA 7.2/2 Mbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • hotspot
  • Wi-Fi 802.11b/g
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 3.0
  • A2DP
  • 2.0
  • A2DP
  • EDR
Harmful irradiation
  • SAR - 0.34 W/kg (head) 0.96 W/kg (body)
  • SAR - 0.37 W/kg (head) 0.36 W/kg (body)
Music and Audio
Music and Audio — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Radio
  • Nо
  • No
Other features
Other features — specifications for Sidekick 4G, K01.
SpecificationSidekick 4GK01
Dop
  • Sensors Accelerometer
  • proximity - T-Mobile TV -MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -ThinkFree Office document editor
  • PDF viewer -Voice memo -Predictive text input - Optical trackpad - Also known as T-Mobile T839 Sidekick 4G
  • Sensors Accelerometer Pocket Office -MP3/WAV/WMA/eAAC+ player -MP4/H.264/WMV player -Organizer -Facebook and YouTube apps -Photo editor -Voice memo/dial/commands -Predictive text input Also known as Toshiba IS02