Question

Is there any fast and stable way to detect whether a user is from USA, Asia, or Europe?

I want to show ads in my app, so I need it.

Thanks

Answer 1

Option 1

//Returns the ISO country code equivalent of the current 
//registered operator's MCC (Mobile Country Code).
  android.telephony.TelephonyManager.getNetworkCountryIso() 

Option 2

//Returns a constant indicating the device phone type.
android.telephony.TelephonyManager.getPhoneType()

Option 3

//Returns the name of this locale's country, localized to locale.
context.getResources().getConfiguration().locale.getDisplayCountry(Locale locale);

First two, rely on the network or phone type. The third one relies on the configuration of the phone, assuming that even if someone from the USA is in Europe, will still have the phone setup to be from USA, other ways it should just be treated as european.

By the way, USA is a country, Europe and Asia are continents, you’re probably referring to America instead, or North America in any case.

That is, assuming you don’t want GPS to avoid devices without it