How do I unlock an iPhone 5s?

[Frankgold]

I am considering upgrading to an iPhone 5s from my iPhone 4s.  I want to be able to use it overseas with a SIM card from another country (Spain, primarily).  What must I do to have the phone unlocked?

[gurase · Accepted solution]

The iPhone 5S comes unlocked out of the box for both US and international carriers.

[Frankgold]

Thank you, gurase.  That is excellent news.

[mars315]

I have a Verizon issued iPhone 5, but due to an "accident" I had to go to Apple and they gave me a new phone.  They stated that I was getting exactly what I had had before.  But do you know if this means that my Apple-issued iPhone might actually be locked?  I really need to know because I am planning on getting a Sim Card in Grand Cayman this weekend!

Thanks.

[ttipgem]

The Verizon iPhone 5s comes unlocked regardless of the place from which you got it.