("らくらく" is Japanese word , pronunciation is "raku raku",
meaning is very very comfortable, convenient and easy.)
* Big buttons are "らくらく".
* Three shortcut buttons (shortcut dial) are "らくらく".
* Support widget function, direct operation on desktop is "らくらく".
* Both widget and application , same operation is "らくらく".
* Number registration to a shortcut button is "らくらく".
(In Japan, "らくらく" phone is very famous and useful for the aged people.
- Reason of permissions
READ_CONTACTS: for Shortcut button.
WRITE_CONTACTS: for Shortcut button.
CALL_PHONE: for Dialing.
CALL_PRIVILEGED: for Dialing.
CHECK_LICENSE: for Google Play license check.