To dial a number in the Recent tab

From the Recent tab, tap the Call icon at the right of the call entry.
From the Recent tab, tap the image to the left of the call entry to view all of the contact's numbers saved in your phone’s memory. Tap a phone number to dial it.

TIP!
To copy a phone number onto the dial pad, touch and hold the entry from the call logs, then tap Copy call number in the context menu. Change to the Dial tab, touch and hold the phone number field, tap PASTE, then edit the number as necessary before tapping the Call button on the keypad.