Can I buy unlocked iphone and move with it to another country?

I'm moving out of america in june and I was thinking I'd buy an iphone here before that(because it's cheaper here in america). When I get to my new country, I'll have to put a new sim-card in again, but I'm scared the phone will be locked and won't work in out of america or without the american sim card? I was planning on buying a unlocked iphone, but I don't know if that guarantees that I'll be able to use it in my new country. Anyone that can assure me it's safe?

No you can't!

Any unlocked iphone should work. My iphone 4 worked in india (it was unlocked) with an indian sim card.

Yes you can Buy it from Any Executive machine/iPhone Store. For, more Techno Updates you can Visit:--

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No you can't! Http://melspores.info/

Yes you can. Once you unlock an iphone or buy an unlocked iphone you can then use it in any country and with any gsm telecom operator.

Yes you can

John you are incorrect! I bought an unlock Iphone, went to France, put a French sim card in it, it worked, just came back to the us, got a us sim card it works! That is why you pay an expensive phone! So yes Amalie go for it!