Trinidad and Tobago → Dominican Republic
Trinidad and Tobago plugs
Dominican Republic plugs
Shared plug types: A, B
Compatibility: Compatible
Voltage — Trinidad and Tobago 115V — Dominican Republic 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.