Brazil → United States
Brazil plugs
Type C
Type NUnited States plugs
Type A
Type BNo shared plug types. A travel adapter is required.
Compatibility: Adapter Required
Voltage — Brazil 127V — United States 120V
Voltage difference is small. Most electronics will work safely.
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.