You Do Need power plug adapter while traveling from Guinea-Bissau to Solomon Islands.

Here is Why You Need An Adapter

The outlet and plug type used in Solomon Islands are G and I and in Guinea-Bissau is C. This is how they look like.

In Guinea-Bissau, outlets of type C are in use.

Type C

In Solomon Islands, outlets of type G and I are in use.

Type G

Type I

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