American Samoa → United States
American Samoa plugs
Type A
Type BUnited States plugs
Type AType BShared plug types: A, B
Compatibility: Compatible
Voltage — American Samoa 120V — United States 120V
Voltage is the same. Your devices should work normally.
Device compatibility (phones)
Phones almost always support 100–240V, so yours should work safely. Check your charger label to confirm.
You likely only need a plug adapter (if socket shapes differ). Voltage is close between these countries.