Don’t require power plug adapter while traveling from Angola to São Tomé and Príncipe.

Here's why you do not need an adapter

The outlet and plug type used in São Tomé and Príncipe are C and F and in Angola is C and they are compatible with each other.

Angola

In Angola, outlets of type C are in use.

Type C

São Tomé and Príncipe

In São Tomé and Príncipe, outlets of type C and F are in use.

Type C

Type F