Auto Call Answer is simple and easy to use application. It pickup/answer incoming call and play selected mp3 file to caller.1. Copy mp3 file in SDCard (Which you want to play as answer of incoming call).2. Click on "Auto Answer Audio File" button.3. Select mp3 file from SDCard.4. Click "Disable Auto Call Response" button, Its toggle button, It is used to enable/disable Auto Answer functionality5. Wait for phone call.6. Application will pickup/answer the call and play your favorite response to caller. (Make sure you set "Enable Auto Call Response")Enjoy…….Note: This application optimized for Samsung Nexus S.