You can set preferences for many phone operations in Call Settings. Although the default settings will suffice for most calling situations, here are a few settings that you might want to examine.
1. Launch Phone, press the Menu key, and tap Call Settings.
2. The Call Settings screen appears. Here are some of the more common, useful settings:
• Call Rejection. Tap Call Rejection to enable/disable Auto Reject Mode for blocked callers, as well as add or remove numbers from the Auto Reject List.
• Set Reject Messages. Add or delete text messages that you can send when manually rejecting an incoming call by dragging Reject ...