It's fully functional demo of the application "One Click USSD". You will be able to send only 25 USSD messages in this demo version.
To install widget long tap on your home screen, choose Widgets, then choose One Click USSD widget from menu. Fill in the data for your predefined USSD and save settings. Icon appearing on the screen. Single tap and USSD request Sent! Enjoy!
Please contact me via E-mail for any questions - there is no ability in the Market to answer in comments. Please don't forget to rate this application. Thanks!
For One Click SMS service please search our "One Click SMS Widget" application in Market.