This is my suggestion in Simple Contacts by Simple Mobile Tools.
Components
Simple Contact by Simple Mobile Tools is an open source application with a simple interface and well arrange features. A simple app for creating or managing your contacts from any source. You can display your favourite contacts on a separate list. Over 1000 users downloaded this application.
I just notice that the application didn't have a block this number feature and that is what I'm going to recommend with application.
Proposal
I'm suggesting for this application to have a block this number feature. This is because I have noticed that this application doesn't have this feature. By simply adding the block this number feature the user can easily block the number he or she wants to block.
Mockups / Examples
The picture below is the original version that only have text and call feature, the name and the number feature and the star which symbolizes the add to favourites.
This is the edited version with the block this number feature.
Benefits
The importance of having a block this number feature is to block the number that keeps on sending spam messages or prank calls. And also to block the number the user don't want to receive a text or a call. The user will be at ease since nobody will bother her/him anymore.
Conclusion
This application is very helpful to everyone who is very eager to block the number of their stalkers who keeps on texting or calling them. Also to those who wants to block the number they want to block in their cellphones. It will also make the application updated.
Posted on Utopian.io - Rewarding Open Source Contributors