Apple Iphone Fun and Iphone Guide. Iphone apps, iphone wallpapers, iphone software
During a call, you can make or receive another call. If you receive a second call, iPhone beeps and shows the caller’s information and a list of options.
When you’re on a call, the screen shows call options.
When you receive a call, tap Answer. If iPhone is locked, drag the slider. If you’re using the stereo headset, click the mic button to answer a call.

Buttons at the bottom of the Phone screen give you quick access to your favorites, recent calls, your contacts, and a numeric keypad for dialing manually.
http://www.apple.com/iphone/tips/
Unless iPhone is syncing with your computer, you can disconnect it from your computer at any time.
When iPhone is syncing with your computer, iPhone shows “Sync in progress.” If you disconnect iPhone before it finishes syncing, some data may not get transferred. When iPhone finishes syncing, iTunes shows ”iPhone sync is complete.”
If you get a call during a sync, the sync is canceled automatically and you can unplug iPhone to answer the call. Connect iPhone after the call to finish syncing.