1. First of all, log out of your current Apple ID by going to Settings -> iTunes & App Store and press the 'Sign Out' button.
2. With no Apple ID assigned to your iDevice, open the App Store and download a free app like Viber.
3. A popup will appear asking you to either Sign in to your existing Apple ID or Create a new one. Choose the second option. (Create a new Apple ID)
4. Choose the App Store Country you like and press next.
5. Next, enter your email address, password and fill in your security questions then press next once your done.
Note: The email address must be active as you will be receiving a verification email later on.
6. Now you will need to enter some fake information from the country you selected but first, make sure the option 'None' is checked on Billing Information.
Go to http://www.fakenamegenerator.com/, pick the country you selected on step 4 and click on generate. Enter the information you see there on your iDevice like this:
7. Press the Next button one more time and you will now see this screen:
8. Check your email address for an email from Apple to verify your Apple ID.
9. Once you've verified it, you may login and download any apps from the country you chose!
Enjoy!