What does it mean if a iPhone is Unlocked?

What does it mean if a iPhone is "Unlocked"…
What does it mean if an iPhone is "Locked"?

Is one better than the other, or does it depend?

Is one more expensive than the other?

I still don't really even understand what locked/unlocked mean… Cuz I'm a noob… A big old noob…

Lol, if you can explain this to me, it would be greatly appreciated!

Unlocked

Unlocked iphone can be used with all carriers that use sim cards.

A locked phone means that it is locked onto one network (e.g 3) and the only sim cards that will work in the phone is 3 sim cards, an unlocked phone means you can use the phone on any network allowing you to use witch ever sim card you like, although there are ways to unlock a locked phone just Google it, i would say having a unlocked phone i better as if you decide to change network then you don't have to buy a new phone, they are both the same price depending on where you get them from, hope this helped.

It can mean a couple of different things, here is the most common one. If you are trying to buy a phone from somewhere online like amazon then it will say locked or unlocked. Locked means that once you buy that phone for the listed price then you must take it to your phone company and pay a fee around $10 so that it may be used with that phone service. Unlocked means that it is already ready to be used with any phone sevice.

What does it mean if a iPhone is "Unlocked"?
>> you can use any network simcard with an unlocked iphone.

What does it mean if an iPhone is "Locked"?
>> it will work only with the locked network simcard

yes unlocked one is expensive then the locked one.