You Do Need power plug adapter while traveling from Brunei to Philippines.

Here is Why You Need An Adapter

The outlet and plug type used in Philippines are A, B and C and in Brunei is G. This is how they look like.

In Brunei, outlets of type G are in use.

Type G

In Philippines, outlets of type A, B and C are in use.

Type A

Type B

Type C

I am from

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