How to Call a Toll Free Number From Overseas

1. Dial '011' on your phone.
2. Dial '1' to access U.S.-based toll-free numbers.
3. Dial the toll-free number and area code as you normally would.

How to Send Free Text Messages With O2

1. Go to the 'My O2 Account' Web page.
2. Click on 'Sign in' at the top of the page.
3. Enter your O2 username and password in the empty fields and click 'Sign in.'
4. Click 'Free texts.'
5. Type the phone number of the recipient in the 'To' field.
6. Type your message in the 'Message' field. You can use up to 444 characters in your message.
7. Click the 'Use free text' option.
8. Click 'Send' to send your free text message.

How to Get SMS Codes for Caller Tunes

1. Visit the website of your cellular service provider. When the website opens, log in by entering your user name and password.
2. Type 'caller tunes' or 'ring back' in the search field on the website. When the website returns the results, open the appropriate page for instance 'Caller Tunes Catalog' or 'SMS codes.'
3. Browse through the list of song names available for caller tunes. With each song name, you will find an SMS code. On some websites, you will find the option to search for the song using the search field, which will show you the SMS codes.
4. Call the customer services department of your cellular network provider if you are unable to find the SMS codes on the carrier website. The network representative will mostly likely send the codes to your phone via SMS.

How to Send Messages Without a Cell Number

1. Open your Internet browser or your cellphone's browser if it has Internet capabilities.
2. Access a text-message website that does not require you to enter your cell number. See the Resources section of this article for examples.
3. Fill out the text message form on the webpage. Enter the person's cell phone number, wireless carrier and the message. If you would like the person to know that you sent the message, include your name in the message.
4. Proofread the information you entered and press 'Send' when complete. Another page will load, stating the message was sent.

How to Send a Text From My Computer

1. There are plenty of websites that allow you to send free SMS messages to most of the U.S. and some foreign providers. You can send the same message to several recipients, just type the message and click 'Send.' Most of such websites also allow sending pictures or videos. See links to examples in the 'References' section.
2. Yahoo! Messenger is a free instant messaging application by Yahoo! used for real-time conversations by users all over the globe. You can even call other computers or phones using VoIP (Voice over Internet Protocol). Text messaging to cellphones is also included and is free. Just select text option for your contact and click 'Send.' See the References section for link.
3. Skype is another application that uses VoIP, but unlike Yahoo! Messenger, it is not as convenient for instant messaging. Skype is a quick way to connect with friends via PC-to-PC calls with webcam and cell phone calls. Texting to phones is another feature of the application. However, there is a charge for this service. See link in the 'References' section.

How to Stop Unwanted Phone Calls for Free

1. Verify that your number is on the National Do Not Call Registry by going to the website donotcall.gov and clicking on the 'verify a registration' link. You can also check a number by calling 1-888-382-1222 from the phone number you want to verify.
2. Place your number on the registry by following the phone prompts or the directions on the website. Those who register a number through the website will receive an email confirmation with a link. The link must be accessed within 72 hours to verify the numbers registration.
3. Report any continued telemarketing calls to the Federal Trade Commission. Follow the link to the FTC on the donotcall.gov website. Complaints can also be filed by phone at 1-888-382-1222. You will need to provide the phone number of the call, the name of the company and the date the call took place.

How to Make a Phone Call From My Desktop Using XP

1. Navigate to the web page of a phone service client and download the required software.
2. Save the downloaded file to your desktop for safekeeping.
3. Double-click on the downloaded file and select the option to 'Install.'
4. Restart your computer.
5. Open the 'Start' menu, click on 'All Programs,' and open the phone client program.
6. Input the number to be called and press 'Call' to complete the call.