Open the Contacts app, then tap the Menu icon .
Tap Speed dial.
Tap the speed dial number to assign, then tap the Contact entry for it.
Repeat selecting a speed dial number and the desired Contact entry as necessary.
The Speed dial icon in the contact entry allows you to set speed dials for selected phone numbers either when creating it or while editing it later.
From the contact entry, tap Edit icon , then tap the Speed dial icon to the right of the phone number you want to set with a speed dial.
Tap the speed dial number to assign to it.
Tap SAVE.
To remove a speed dial, edit the contact entry, tap the Speed dial icon , then tap the Remove icon to the right of the speed dial you want remove.