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T-Mobile Sidekick

Jul 30, 2008
Market status
Release date
Jul 30, 2008

US carrier availability

Discontinued: T-Mobile


No pros


  • Lacks Wi-Fi
  • Slow data means slow Internet browsing (EDGE)
  • Low pixel density screen (179 ppi)
  • Too little RAM memory (128 MB RAM)
  • It is so thick it needs a personal fitness trainer (0.70 inches inches)
  • Low resolution display (240 x 400 pixels)
  • Low-resolution camera (2 megapixels)
  • The camera lacks autofocus
  • The camera lacks flash
  • Lacks an ambient light sensor for automatic screen brightness adjustment
  • No front-facing camera
  • Lacks global positioning system (GPS)




T-Mobile Sidekick has the typical for the series design language but comes with smaller dimensions and respectively screen (2.6” instead of 3”) which nevertheless, is still with WQVGA resolution. Other features include Stereo Bluetooth support, 2-megapixel camera with video recording capability and a microSD slot. The most interesting one though, is the option to use colorful shells, to change the way the device looks.

Do you ...?



  • Device type:
    • Smart phone
  • OS:
    • Danger (4.7)
  • Form factor:
    • Swivel
  • Dimensions:
    • 4.70 x 2.30 x 0.70 inches (119 x 58 x 18 mm)
  • Weight:
    • 4.50 oz (128 g)
      the average is 5.2 oz (150 g)
  • Design features:
    • Full keyboard
  • Keys:
    • Left: Volume control, Other; Right: Other


  • Physical size:
    • 2.6 inches
  • Resolution:
    • 240 x 400 pixels
  • Pixel density:

    Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.

    • 179 ppi
  • Technology:

    Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.

    • TFT
  • Screen-to-body ratio:
    • 27.59 %
  • Colors:
    • 65 536


  • Camera:
      • 2 megapixels
  • Camcorder:
      • 220x176


  • System memory:

    System memory - System memory, or RAM memory is the type of memory that the device uses to temporarily store data from the OS or currently-running apps. The more RAM available to the device, the better the performance will be when multiple or heavier programs are running.

    • 128 MB RAM / 64 MB ROM
  • Storage expansion:
    • microSD, microSDHC


  • Talk time:
    • 5.00 hours
      the average is 15 h (884 min)
  • Stand-by time:
    • 9.0 days (216 hours)
      the average is 18 days (425 h)
  • Capacity:
    • 1030 mAh
  • Type:
    • Li - Ion


  • Music player:
    • Supported formats:
      • MP3, AAC, WMA, WAV
  • Video playback:
    • Supported formats:
      • 3GP

Internet browsing

  • Browser:
      • HTML Browser
    • supports:
      • CSS, JavaScript, HTML, XHTML


  • GSM:
    • 850, 900, 1800, 1900 MHz
  • Data:
    • EDGE
  • Global Roaming:
    • Yes
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Phone features

  • Phonebook:
    • 2000 entries, Caller groups, Multiple numbers per contact, Picture ID, Ring ID
  • Organizer:
    • Notes, Alarm, To-Do, Calendar
  • Messaging:
    • SMS, Predictive text input, MMS
  • E-mail:
      • IMAP, POP3, SMTP
  • Instant Messaging:
      • AIM, Windows Live / MSN, Yahoo!, ICQ
  • Games:
      • Yes


  • Bluetooth:
      • 2.0, EDR
    • Profiles/ Protocols:
      • Handsfree (HFP), Object Push (OPP), Generic Access (GAP), Service Discovery Application (SDAP), Service Discovery Protocol (SDP), Generic Audio/Video Distribution (GAVDP), Advanced Audio Distribution (A2DP), Audio/Visual Remote Control Profile (AVRCP)
  • USB:
      • Yes
    • Connector:
      • miniUSB
  • Headphones connector:
    • 3.5mm
  • Other:
    • Computer sync, SyncML

Other features

  • Notifications:
    • Polyphonic ringtones, Vibration, Speakerphone
    • Voice recording, TTY/TDD

Regulatory Approval

  • FCC approval:

    FCC approval - The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions. Every wireless phone device that that is sold in the U.S. has to be tested and approved for sale by the FCC.

    • Date approved:

      Date approved - Shows the date when the particular phone is approved by the Federal Communications Commission

      • 19 May 2008
      • FCC ID value:

        FCC ID value - Shows the FCC Identifying value of the particular phone

        APYNAR0064 link
  • FCC measured SAR:

    FCC measured SAR - The exposure standard for mobile devices employs a unit of measurement known as the Specific Absorption Rate, or SAR. The SAR limit stated in the international guidelines is 2.0 W/ kg*. Tests for SAR are conducted using standard operating positions with the device transmitting at its highest certified power level in all tested frequency bands. Although the SAR is determined at the highest certified power level, the actual SAR of the device while operating can be well below the maximum value.

    • Head:
      • 0.81 W/kg
    • Measured in:
      • 1900 MHz
    • Body:
      • 0.68 W/kg
    • Measured in:
      • 1900 MHz


  • Officially announced:
    • 30 Jul 2008
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Despite our efforts to provide full and correct T-Mobile Sidekick specifications, there is always a possibility of making a mistake. If you see any wrong or incomplete data, please LET US KNOW.

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