Bobsled by T-Mobile is a service that anyone can use to make communicating with friends and family easier and more fun. Bobsled lets users place free calls to Facebook friends, plus any phone number in the US, Canada or Puerto Rico. Users can place calls from their browser or from our applications for iPhone and Android.

No! Bobsled is totally free.

Bobsled requires recent versions of Mac and Windows operating systems. In addition, Adobe Flash 10.0.2 or greater is required. The list of supported operating systems and browsers is below:

• Windows: Vista, Win7, XP
  • IE8, IE9 (only 32-bit browser version)
  • Chrome 10+
  • Firefox 3.6+
• Mac OS X: 10.5+
  • Safari 5
  • Chrome 10+
  • Firefox 3.6+

Try placing a call to a Facebook friend or phone number from calling.bobsled.com. If your call goes through, Bobsled is fully installed and functioning. Otherwise, you'll need to download and install some free voice software.

To provide you with the absolute best voice quality, Bobsled needs you to install our voice services package on your computer. This software is absolutely free and runs in the background. It lets your computer connect to the Bobsled voice servers and then to your friends.

In Firefox and Safari, Bobsled inserts a button next to the URL bar that lets you access the talk window with one click.

In IE, this button is hidden by default. To unhide the button go to View --> Toolbars --> and select "Command bar". When you click the button, it will take you to calling.bobsled.com.

In Chrome, you will need to download the toolbar button separately. Visit calling.bobsled.com on your Chrome browser and click on the "Quick Launch" download button to add the button to your toolbar.

Click the pop out button in the top right corner of the Bobsled talk window. The talk window will pop out and become its own window that you can use to talk and chat while you surf.

To place a call, visit the application page at calling.bobsled.com. Use the Bobsled talk window on the right side of the screen to select a friend and click on the Call button on the next screen. The person you call will receive a Facebook chat message from you with a link. When they click on the link, your call will be connected. Your friend does not need to have Bobsled installed to answer the call, but must accept Flash permissions.

Click the Answer button on the dialogue box that appears in the talk window.

If you are on Facebook, simply click on the link that appears in your chat window.

If you can hear ringing but do not see the dialog, check other tabs or browser windows that you have open to find the talk window.

No. Your friend does not have to have Bobsled installed to answer the call.

The person you call receives a chat message from you with a link. When they click on the link in the message, your call will be connected.

If your friend does not answer, you can use Facebook text chat to determine if they are available. See "How do I answer a call?" for more details.

You will continue to hear ringing for about a minute, then you will be sent to leave your friend a voice message up to 45 seconds long, for your friend. After you're satisfied with your message, you can either post it to their wall or send it as a private message.

No. Bobsled is not a phone replacement service and cannot be used to place calls to 911 (or 411) for that matter.

Select a friend and click Call, then select "Voice Message" from the drop down menu. Then click "Record" to leave a voice message for up to 45 seconds long.

Use the record, stop, and play back buttons to record your message and preview it. If you want, add a note to it, too!

Once you've recorded something, click Finish to send the voice message, either as a private message or as a wall posting that everyone can see and listen to. Private messages will show up in your friend's Facebook inbox.

Yes. We have applications for both iPhone (also works on iPod and iPad) and Android.

Third-party cookies must be enabled to move across pages and keep your Facebook logged in status. Some browsers have a security setting that prevents third-party cookies. Change your security settings to ensure that the Sign On screen doesn't appear:

For Mozilla Firefox:

• Firefox toolbar -> Options -> Privacy Tab
• Under Firefox will "Use custom settings for history", check the box that says "Accept cookies from sites"
• Click "OK"

The process of uninstalling is different across systems and browsers. Follow the proper instructions to remove Bobsled from your system for each Operating System:

We welcome your feedback. Click here to submit a comment or other feedback.

For the best possible quality, headphones are strongly recommended for you and the person you are speaking to.

To test your speaker and microphone, click "Audio Setup" and walk through the setup guide, selecting the proper microphone, clicking record and replay to hear how you sound.

Usually the person you called either has the speakers muted or your microphone is not properly configured. Verify that you have a working microphone and that it has been correctly selected using the audio setup link in chat.

You can then test if it is correct by clicking the red record button, talking into your microphone, and then playing it back when the red record button switches to the green play button.

This usually happens if your friend's microphone is not configured properly or your speakers are muted. Verify that your speakers or headphones are plugged into the right connections and working correctly using the audio setup link in chat. Ask your friend to check their microphone setup using the audio setup link in chat.

In order for you to call your friend, they should be logged into Facebook and be visible to you on chat.

However, you can leave a voice message for any of your friends, whether they are available in Facebook chat or not. Go to the calling.bobsled.com, select a friend from the list, click on the "Call" button, and select "Voice Message" from the drop down options. Follow the prompts to record the message. Once finished, post to a friend's wall or send as a private message.

There are many reasons why your friend may not answer. To answer a call they need to be available for a call, aware of the call request and click to accept the call. You can find out your friend's availability by using Facebook chat to text message your friend prior to starting a voice chat. If your friend is available and attempting to answer, they must accept the inbound call request, grant the Facebook permissions, and their computer must meet the system requirements listed in Does Bobsled work on my machine and browser?

Yes! Open up a new tab in your browser to keep the call connected.

The user forum can answer many of your questions and lets you suggest new features or ways you'd like to use bobsled that aren't available yet. You may also submit a support request via the forum.

You can read all the legalese here.