Costa Rica → Cuba
Costa Rica plugs
Cuba plugs
Shared plug types: A, B
Compatibility: Compatible
Voltage — Costa Rica 120V — Cuba 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.