You Do Need power plug adapter while traveling from American Samoa to Falkland Islands.

Here is Why You Need An Adapter

The outlet and plug type used in Falkland Islands is G and in American Samoa are A, B, F and I. This is how they look like.

American Samoa

In American Samoa, outlets of type A, B, F and I are in use.

Type A

Type B

Type F

Type I

Falkland Islands

In Falkland Islands, outlets of type G are in use.

Type G