Components
SMSdroid is a special messaging app letting you send messages and it's an open source application.
Proposal
Sms droid is a nice app for sending and receving messages. I suggest that a quick response feature should be added.
Mockups / Examples
The quick response button should be made available.
And when it's click it shoud contain the short quick response messages.
Benefits
With this a user can send a quick to any one calling or messaging them, when he/she is very busy at that moment.
And this can also reduce the stress of a user typing, because the quick message is already there.
Posted on Utopian.io - Rewarding Open Source Contributors