Earthquake iOS built-in option not on iPhone bought outside Japan but using in Japan
I bought my iPhone in Australia and brought it with me to Japan and now use it on the docomo network.
I'd like to have the iOS built-in Earthquake warning option, but I can't find it on my phone.
How do I get this option on my Australian iphone in Japan?
How do I check what country iOS I have installed?
How do download and install the Japan iOS?
Many thanks.
iPhone 4, iOS 6.0.1, Bought: Australia; Use: Japan