Call a number from the Phonebook: From the main menu, go to
Phonebook or press right selection key from the Home screen.
Scroll through the contacts with the UP and DOWN keys, press the
green call key and select the desired SIM card to call a
selected contact.
Call a number from the call log: from the main screen, press ;
the missed, received and outgoing calls will be automatically
displayed. Scroll them with the keys, press again the green call
key and select the desired SIM card when you found the number
you want to call back.
Add contacts to the Phonebook: Select Menu > Phonebook > Add
new contact > Add and choose the storage between one of the
SIM cards or the Phone. Enter the name and the new number,
then press Options > Save.