Can't "Find My iPhone" in Korea

Question

I am traveling in Korea from the US and have discovered that "Find My iPhone" doesn't seem to work for either my iPhone4 or iPad2. I am able to send the alert signal and message but the location is unavailable.
It appears that Apple provides MobileMe service to Korea so I do not understand why these devices cannot be located.

Answer 1

Winston, you seem knowledgable, so I am reposting this question I put out into the community... 
shuppie  
        Jun 16, 2012 1:15 AM    
I lost my iPhone in London in the wee hours of the morning.  I had to return to the US a few hours later.  I tried using my "Find My iPhone" app when I got home, but the response was that my phone was not connected to the internet.  I called Vodaphone and had the sim card and handset blocked.  I called T-Mobile in the US and did the same.
My battery was low when I last used my phone.  I tried calling it from my hotel, but it went straight to voicemail.  I requested a lock on my phone using the app, as well as sent a message offering a reward.  So my question is really two fold:  1.) If someone charges my phone, will the "Find My iPhone" app work, sending me a message with a location?  2.) will it send the message offering a reward and my contact info?  Worried that by blocking the handset, noone will be able to charge it and connect to the internet.  Did I screw myself?  Argh.