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Cell Phones

Mirror: Using Skype and Unlocking your T-Mobile SDA

Editor’s note: This post was not written by me, it was written by Ken who’s website is, and is currently down. The original link to this post is here. I grabbed this post from a google cache of his page. Use at your own risk!


Today I have a special treat for any of you
with a T-Mobile SDA
like my own. I’ve decided to write a nice little article about how to
unlock your SDA
so that you can use it with any provider (T-Mobile, Cingular,
Verizon, any provider with SIM cards). The added bonus here, however,
is the piece of this article that explains how to overclock your SDA
and install SKYPE for use over your WLAN network. Skype is a VoIP
(Voice over Internet Protocol) program that, when you add some money
to the account ($12 worked for me for about 6 months) allows you to
get your own Skype phone number (dialable from any landline or other
cell phone) and place calls to any landline or cellphone for a
fraction of the cost of regular T-Mobile cell phone minutes. Well, I
think that sums it up, so let’s get on to the how to: Unlocking
Your SDA
for FREE
To unlock your SDA,
you’ll require the following things:

  • A PC running Windows (Windows XP
    is best, if you can swing it)

  • Your T-Mobile SDA

  • A USB-to-Mini USB cable (the one
    that connects your SDA
    to your computer)

  • Some amount of sanity

  • A desire to be free of (or have the ability to be free of)
    your current network

    WARNING: What you are about to do will
    almost certainly void your warranty. Don’t try it unless you know
    what you are doing. I take no responsibility for your bricked cell
    phone. Once again: don’t try this unless you know what you’re doing.
    If you don’t have Microsoft’s ActiveSync installed and configured
    already, do so by installing it from the CD that came with your SDA,
    or by downloading it here.
    If you’re downloading it, you should just be able to install it from
    the file you’ve downloaded. –> Test the connection between your
    computer and SDA
    by plugging in your USB cable to the phone and PC. They should begin
    synchronizing. Allow them to do so, and when they’re finished, leave
    the SDA
    plugged into the PC <– Now that you have ActiveSync configured,
    you’ll need to download some software that will assist you in
    unlocking your SDA.
    The first tool, SDA_ApplicationUnlock, removes the phone’s lock
    against running unsigned applications. An unsigned application is an
    application that was not created by a reputable company (in this
    case, T-Mobile). SDA_ApplicationUnlock was created by the spectacular
    NovoMobile. –> Download
    <– Next, you’ll need to get the
    SPV-Services toolset, which is provided free-of-charge by the
    wonderful developers over at
    The SPV-Services toolset will allow’s server to
    interface with your phone and unlock it for you. Download the toolset
    as a ZIP file, and extract it to a new folder with a name of your
    choice on your desktop. –> Download
    the SPV-Services toolset
    <– Now that you have the software
    necessary to unlock your phone, you’ll need to do two things before
    you can start doing so: Begin by running the SDA_ApplicationUnlock
    program with your phone still plugged in. Just do what the program
    tells you. You should get a message telling you that your phone was
    successfully unlocked. Next, you’ll need to install the file
    on your phone. The file can be installed by copying it to
    your phone using the "explore device" button in ActiveSync.
    Next, simply use the File Explorer program on your SDA
    to browse to the file and open it. That’s it. Now, open the
    SPV-Services toolset folder that you created on your desktop. Inside
    is a file called SPVServices.exe. Start it, and use the sidebar on
    the left to select "SIM lock" or something similar. Follow
    the instructions on the page, and click the button to unlock the
    phone. The process should be fairly instantanious. DO NOT AT ANY TIME
    UNPLUG YOUR PHONE. You can also change your CID if you feel the need
    to. Assuming everything has gone on without a hitch, that’s all you
    had to do! Your phone is now unlocked and can be used with any

    Installing and Using SKYPE to Make Phone Calls Over
    Your Wireless LAN

    Now here’s the exciting part — the one
    that saves you money! A lovely company called Skype allows you to
    make calls to other Skype members over the internet. However, if you
    add some money to your Skype account, you get SkypeOut and SkypeIn –
    services that, respectively, allow you to make calls to outside
    numbers (landline and cell phone numbers) and recieve calls (at your
    own personal phone number just like any other). This part of the
    tutorial will guide you in installing Skype on your SDA,
    and overclocking it so that lag is minimized. If you complete this
    tutorial successfully, you’ll be able to make phone calls (almost for
    free) to anywhere in the world over your home, work, or school
    wireless networks. WARNING: This part of
    the the tutorial will involve manually modifying the software and
    operating system of the SDA.
    It will also involve overclocking (or increasing the speed of) the
    to potentially unsafe levels. As tested, I haven’t had any problems.
    You should be okay, but there is always a possibility (as with
    anything you do) that your SDA
    will be damaged. I assume no responsibility for this or any other
    modification you make to your SDA.
    Following these instructions as closely as possible will minimize
    risks to your person or phone. That said, let’s get started! Begin by
    the Skype cab file
    , and extracting and renaming its contents. If
    you have Windows XP, you can simply double-click on the .CAB file to
    open it. If you don’t have XP, you’ll need WinZip or an something or
    something of the like. Extract the contents of the .CAB file to a new
    folder on your desktop, and rename the files as shown:

    • 000Boing.002 becomes

    • 000Skype.001 becomes

    • SKYPED~1.003 becomes SkypeDialer.dll

      Without overclocking the SDA,
      Skype has a 10-second delay when calling a landline. You’ll want to
      overclock yours up to 240 MHz. You can do so by downloading a nifty
      little program called OmapClock, which you can find here. You can
      simply move it to the /Windows folder on your SDA
      via the "explore device" button in ActiveSync. When it has
      been transferred to your SDA,
      execute it by selecting it using the "file manager" program
      on the SDA.
      If it does not run correctly, chances are that you didn’t
      application-unlock your SDA.
      Do so by following the first part of this tutorial. Change the
      processor speed to 240 MHz (NO MORE, NO LESS) and save your
      settings using the left soft-button menu. After you’ve done so, move
      the Boing.wav, Skype.exe, and SkypeDialer.dll files to the SDA
      using ActiveSync’s "explore device" functionality. You’ll
      want to put them in the "/Windows" folder. Congrads, skype
      is installed. Unfortunately, you still have to configure it, which is
      made harder by the fact that the SDA
      doesn’t have a touchscreen. You’ll have to use a neat program called
      Pocket Controller Pro to actually tap Skype’s "Sign In"
      button (because it was designed for Pocket PCs with touchscreens).
      Luckily, you’ll never have to use this program again (unless you need
      to reconfigure it). You can download
      Pocket Controller Pro here
      (as a trial with full functionality).
      Install Pocket Controller Pro, open Skype on your device, and enter
      your Skype account information – using your PC’s mouse to click on
      the "Sign In" button. Make sure that you’ve told Skype to
      remember your sign-in information (sign-in automatically on startup).
      That’s it! You should have working Skype! Optional: If you’re like
      me, you have/hate the dreaded T-Zones button on your phone. We can
      change the functionality of that button so that it opens Skype
      instead! To do so, open a new notepad (.txt) file and paste
      "19#/Windows/Skype.exe" (without the quotes) on the first
      line of the file. Save the file as "Short_AP1.lnk" and move
      that file to the /Windows folder of your SDA
      using ActiveSync’s "explore device" functionality. It
      should ask if you want to overwrite a file with the same name. Click
      "yes" or "yes to all". That should do it! Hope
      you’ve enjoyed this little tutorial!!! ALSO: There have been some
      follow-ups! Look through the posts at the top of my homepage.
      The follow-ups basically answer any questions you submit in your