Android Question Android 10 Simcard library not working

[walmo]

Using Simcard library to get subscriberId with the runtime PERMISSION_READ_PHONE_STATE.
It worked on all androids up to 9.
Must I get permision on something else , there no error in log. It just returns a null value for getsubscriberid.
Must i use another library.
Thanks

 

[DonManfred]

Privacy changes in Android 10 | Android Developers

developer.android.com

Restriction on non-resettable device identifiers

Starting in Android 10, apps must have the READ_PRIVILEGED_PHONE_STATE privileged permission in order to access the device's non-resettable identifiers, which include both IMEI and serial number.

Caution: Third-party apps installed from the Google Play Store cannot declare privileged permissions.
Affected methods include the following:

• Build
  • getSerial()
• TelephonyManager
  • getImei()
  • getDeviceId()
  • getMeid()
  • getSimSerialNumber()
  • getSubscriberId()

If your app doesn't have the permission and you try asking for information about non-resettable identifiers anyway, the platform's response varies based on target SDK version:

• If your app targets Android 10 or higher, a SecurityException occurs.
• If your app targets Android 9 (API level 28) or lower, the method returns null or placeholder data if the app has the READ_PHONE_STATE permission. Otherwise, a SecurityException occurs.

Note: If your app is the device or profile owner app, you need only the READ_PHONE_STATE permission to access non-resettable device identifiers, even if your app targets Android 10 or higher. Also, if your app has special carrier permissions, you don't need any permissions to access the identifiers.
Many use cases don't need non-resettable device identifiers. For example, if your app uses non-resettable device identifiers for ad-tracking or user analytics purposes, use an Android Advertising ID for those specific use cases instead. To learn more, see best practices for unique identifiers.

 

[DonManfred]

Note: If your app is the device or profile owner app, you need only the READ_PHONE_STATE permission to access non-resettable device identifiers, even if your app targets Android 10 or higher.

Make your app the deviceowner and it will work

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