If I reset my iPhone will it still be unlocked?

If Vodafone unlocked it, it was a legitimate unlock; there should be no problem restoring it and you will be able to use it with a diffrent carrier as well.

Before selling your phone, do this:

http://support.apple.com/kb/HT5661

An afterthought:

When you got the email last year from Vodafone authorizing the unlock, you DID complete the process detailed in the email you got? You did get a "congratulations your phone is now unlocked " message on iTunes?

I have the same question. I have an iphone 4s given to me by a friend from Australia. It was Vodafone, but when I inserted other SIM from here in the Philippines, I was just prompted to activate it and so I did and now I can use our SIM card here. I just want to know that if I will reset it, will it be locked again?

The answer is still the same as FelipeV gave at the start of the thread.

If your iPhone was legitimately unlocked by the original wireless provider,

it will remain unlocked after a reset. If your iPhone was hacked to unlock it

from the Australian (or other) wireless provider, it will relock to that original

wireless provider after a reset.

FYI: you necro-posted to a thread that is more than 2 years old and has been marked

solved. In the future, you would get better response starting your own thread.

Welcome.

Ok, just wanted to be sure and cover all the bases. We don't want some person chasing after you after you have sold them an unlocked phone that isn't.

Have a nice day!