There are many android phones in US which come pre installed with amazon app. These phones fail to install the India version of the amazon store app. Tested this on Moto phones, the installed US app cannot be uninstalled as its loaded as a system app. Trying to install India Version fails.
failed to install in.amazon.mShop.android.shopping-1.apk: Failure [INSTALL_FAILED_CONFLICTING_PROVIDER: Scanning Failed.: Can't install because provider name com.amazon.identity.auth.device.MapInfoProvider.mShop.lite.m2b (in package in.amazon.mShop.android.shopping) is already used by com.amazon.mShop.android.shopping]