iPhone4 FaceTime function activate and method of use

(1) activation FaceTime function
1. Link to phones activated iTunes iPhone4, iPhone4 will automatically sent 
registering text messages to apple server, apple server receives registered
SMS messages, verification and registration, sent messages to the users
mobile phone number registered successfully , registration processes
completed, FaceTime function is enabled, the user can use FaceTime for video
calling.


2. If the automatically register failured  , iPhone4 provides manual activate
FaceTime method. That is, into the "Settings"-> "telephone" menu-make
FaceTime switch button be closed, and then let FaceTime switch button in the
open position.At this time iPhone4 will send registered SMS messages again,
after registration is successful, FaceTime function is enabled, the user can
use FaceTime for video calling.

3. If the user want system to upgrade through iTunes iPhone4 mobile phone ,
and choose never take the wifi iPhone 3 GS in restore backup, iPhone 4 mobile
phone menu options FaceTime switch can not be set. Should guide the user
operation are as follows: "Settings"-> "common"-- > "restoration"-- >
"restore all Settings" (interface such as wallpaper may return to original
state, but the iPhone 4 content will not lost); Since then to enter
"Settings"-> "telephone"-menu, open the FaceTime switch, by the above 2 steps
you can activate FaceTime function.

4. If the user want system to upgrade through iTunes iPhone4 mobile phone, and choose from the iPhone 3 GS with wifi in restore backup, iPhone4 mobile phone menu items will be no FaceTime switch option. Should guide the user according to the following operation restore system: make the iPhone4 cell phone connect to iTunes, click the iPhone equipment on the left of iTunes, and click on the right side of the iTunes "resume" button ,it will be made the iPhone4 returned to the latest version, activate the FaceTime function.

(2) using FaceTime function
Using a mobile phone iPhone4, call common voice on the phone to another one iPhone4 mobile phone ,  there is a FaceTime button in the middle of the panel, this button is gray at first and will not allow to click on the form, the called party answer, a caller to highlight the FaceTime button; A caller can click on FaceTime video calling to the other side puts forward button application, the called party can choose to refuse or accept, in the called party click accept after successfully established a FaceTime connection, into the video call interface. In the FaceTime, the original voice calls will disconnect, no longer produce words free.

(3) the necessary conditions of iPhone 4 FaceTime video calling
1. The FaceTime video phone must be both sides of iPhone4 users.
2. Both sides success in apple server registered FaceTime function.
3. Two iPhone4 must have cellular signal, can a phone call.
4. Both parties must successfully on WiFi network connection.