Enabling/Disabling FaceTime
1. Press the Home Button
2. Tap Settings
3. Tap Phone
4. Tap FaceTime to toggle ON or OFF
Making a FaceTime Call
1. Press the Home Button
2. Tap Contacts
3. Tap Desired Contact
4. Tap FaceTime
Alteratively
1. During a Voice Call
2. Tap Speaker to change to speaker mode
3. Tap FaceTime to upgrade the call to a FaceTime Session