To place a call by dialing

From the Home screen, tap the Phone Key in the Quick Key bar to open the Dial tab of the Phone application.
1. Dial Tab
  
  Displays the diapad.
2. Call Key
  
  Tap here to dial the number that you entered manually.
3. Voice Dialer Key
  
  Tap here to dial by saying the number.
4. Voicemail Key
  
  Tap here to access your voicemail feature.
5. Message Key
  
  Tap here to send a message to the number that you entered.
6. Touch and hold to enter the plus ( + ) symbol to dial an international number.
7. Delete Key
  
  Tap here to delete incorrect number(s) (appears after you begin entering numbers).
Enter the number you want to call on the dialpad.
- If you enter a wrong number, tap the Delete Key to erase digits one by one.
- To erase the entire number, touch and hold the Delete Key .
- To dial an international number, touch and hold to enter the plus ( + ) symbol. Then enter the international prefix for the country, followed by the full phone number.
Tap the Call Key to dial the number that you entered.
- Press the Volume Keys to adjust the call volume.
- Use the on-screen buttons to enter additional numbers, place the call on hold and take an incoming call, add another call, use the speakerphone, end the call, and other options.
- You can use other phone features while the call is underway. If you open another application, the Call icon appears in the Status Bar for the duration of the call.
NOTE
If you opened other applications while on a call, you'll need to return to the Call screen to end the call. To return to the Call screen, you can tap (or press) the Home Key , then the Phone Key or drag the Notifications panel down and tap End call . You can also tap the Contact's name or number at the top right corner of the Home screen.