Is iphone 5s unlocked gsm good to take to Philippines?

I'm planning to have my trip to the Philippines this Dec and I wonder if I can use iphone 5s unlocked gsm while IIm there?

It should be alright but it's better to contact the apple customer service or the phone carrier company to double check but be aware the other country will get a hold of your details

As long as the phone is unlocked, you can use the phone anywhere you want with any SIM card.