FakeSMS

This application fakes a SMS in your Inbox or Sent folder. You can set your desired Message and ID.

Example
The application will ask you to input a phone number and a message and you type...
Phone Number: 911
Message: Hi. This is the police speaking...

Then in your inbox, There will be a new message received. From 911 and with the message "Hi. This is the police speaking..."

If you still don't understand, please see both the screenshot.

You can use this application example when you do not want to go out with friends, simply fake a SMS as if its from your Mum asking you to go back home. Or if you forget to wish your girlfriend or friend a birthday, just fake an SMS in your sent folder and say that maybe your carrier is having some problems during that time.