A Flash SMS message is a text message that you can send to an individual that stands out from the rest. Whereas a normal text message would be routed to the recipient's text message inbox, a Flash SMS will display on the screen of the recipient's mobile device. This is a great feature for when you have a text message that you want someone to read immediately.
Open your text messaging application on your mobile device.
Type the telephone number of the message recipient in the "To" field.
Type "0001" followed by the beginning of your text message. This is considered a "Class 0" message by most cell phones.
Enter the message details that you want to flash to the recipient. For example, "Meet me at 10am."
Select the "Send" option to send the flash message. The recipient will receive the flash alert, "Meet me at 10am."
Visit a website, such as SMS Country or Yahoo! Mobile, that will allow you to send a Flash SMS message if you are unable to use the "0001" option. You may be required to set up a new user account to send the flash SMS message from these sites.