I've got a 3G from Canada (on Fido network) that I'd like to get working here in South Korea. I know it's not a problem with the phone since it works great when roaming. It's just expensive and I'd like to use my Korean SIM card from my crappy Samsung phone with it.

As I understand it, the mobile networks block unauthorized IMEI phones from being used on their network. Is it/will it be possible to clone the IMEI from my Korean phone so that my iPhone is authorized on the network?

I already tried yellowsn0w just to see if it would work and, as expected, it did not.

(Yes, I know it's illegal in many countries to clone the IMEI of another phone. I don't particularly care. The phone isn't stolen; I'm not trying to cheat the carrier out of money or anything here. I merely want to use my iPhone instead of my Samsung so please refrain from discussion of the ethics of IMEI cloning. Thanks )

It is depending on the carrier, there are carriers with no IMEI restrictions.

So far, IMEI on the iPhone 3G can't be changed, on the other iPhone, IMEI could be
changed *faked in previous versions.

Did you ever manage to get your iphone working in Korea?

Unfortunately not. Yellowsn0w is at 0.9.6 and doesn't work. There is currently no way to clone the IMEI of my legitimate Korean phone. South Korean carriers still do not allow non-Korean IMEIs on their networks.

Update: I just noticed FW 2.2.1 and sn0w 0.9.8 were out. Updated properly with PwnageTool, installed, still no luck.

On April 1st the Korean WIPI (protectionist) requirement was removed. Unfortunately this has had no effect on the phone working. I tried I guess Korean networks are still planning on keeping a white list of phones. Thus, no foreign-purchased unlocked phones will work.

Looks like we'll have to wait for an IMEI faking solution or never be able to use our phones here.