SpamFilter: Caller ID Block

Key features:
- Keep Unwanted Calls Away
- Take Control of Your Calls
- Keep Spam Out of Messages
- Handle Messages Your Way
- Stay Close to Your Contacts
- Give Your Calls a New Look

Permission this app asks for:
1) Default SMS handle: for view and send SMS & add message to spam list
2) Default phone handle: to receive and end calls. Need to read call log permission to show all call histories and block/unblock unwanted numbers that annoy users.
3) Need Read contacts permission to show all contacts and their details of them, & make them favorite/unfavorite, access, collect, and use the phone number of the user.