On the Main Menu tap the “Calls” tab. Then click the keypad icon at the top right of the screen. This will display the keypad. Here you can type out any number as usual.
Alternatively, from the Main Menu, select Contacts. Scroll down to the contact you wish to call, tap on them and on the following screen click the small phone icon.
How do I answer an incoming Call?
Simply answer just like a normal mobile phone call.