LG G3100 User Manual page 174

You can associate any of the keys 2 to 9 with a Name list
entry. You can call directly by pressing this key for 2-3 seconds.
Open the phonebook first by pressing [Names] in a standby
mode.
Scroll to
Every Speed dials will be displayed.
If you want to add Speed dials, select <Empty>. Then, you can
search the name in phonebook.
If you select allocated name by Speed dials, you can view
following the submenus.
: You can change the allocation of Speed dials
number.
: You can cancel the allocated Speed dials number.
, then press [Select] to enter this menu.
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