Sometimes you need to send an incoming call straight to voicemail. Maybe it's not the best time to talk or you simply don't want to talk with the caller. In any case, you can do one of the following to send a call straight to voicemail:
- Tap the red Decline button on the screen when the call comes in.
- If you're using the headphones that came with the iPhone, squeeze and hold the microphone/clicker for two seconds.
- Quickly press the Sleep/Wake button twice.