I'm not sure if it works, but :
1. Tap Settings;
2. Tap iTunes & App Stores;
3. Tap View Apple ID;
4. Enter your user name and password;
5. Tap Country/Region;
6. Tap Change Country/Region;
7. Select the region where you will be located;
8. Tap Done.
You gotta have an empty account balance before changing regions.
Idk if this works so don't try it if you don't want to. :o