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Description:

device region

device_region #
A Flutter plugin which uses platform-specific API to return a SIM country code. Supports
iOS and Android.
Installation #
In your Flutter project, in pubspec.yaml file add the dependency:
dependencies:
device_region: ^1.3.0
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Usage example #
Import device_region.dart package.
import 'package:device_region/device_region.dart';
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Get SIM country code #
Call getSIMCountryCode method to receive SIM country code.
await DeviceRegion.getSIMCountryCode();
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Android:
Using TelephonyManager class:
Returns simCountryIso if available. Otherwise, it should return networkCountryIso.
In case the value cannot be retrieved or an error occurs, null value will be returned
iOS:
iOS 16.0 and higher
Due to deprecated properties in CTTelephonyNetworkInfo class, plugin uses Locale class and returns Locale.current.region.identifier.
iOS up to 16.0
Using CTTelephonyNetworkInfo class:
Returns isoCountryCode if available.
In case the value cannot be retrieved or an error occurs, null value will be returned
Important notes #

While call getSIMCountryCode on iOS (up to 16.0), it returns proper country code and can throw error log in debugger as below:

[Client] Updating selectors after delegate addition failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service with pid 91 named com.apple.commcenter.coretelephony.xpc was invalidated from this process." UserInfo={NSDebugDescription=The connection to service with pid 91 named com.apple.commcenter.coretelephony.xpc was invalidated from this process.}
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It's well known bug on iOS and it does not affect the operation of the application.

Method returns null in case if for some reason it was not possible to retrieve the information from the SIM slot. So it will return null i.e on iOS simulators and devices without SIM card inserted.

On iOS, it only works from 12.0 and above. For lower versions it will return null.