双卡设备无法接收SMS问题咨询（附单卡正常实现代码）

Hey there! Let's figure out why your SMS receiver stops working on dual-SIM devices. I've run into this exact issue before, so here's what's going on and how to fix it:

Common Issues with Dual-SIM SMS Receivers #

Your single-SIM code works because it doesn't need to account for multiple SIM slots, but dual-SIM devices require extra handling for two key reasons:

1. The SMS broadcast might be intercepted by higher-priority receivers or system apps
2. Your code doesn't explicitly handle messages from both SIM slots
3. Android 10+ imposes stricter restrictions on static broadcast receivers for SMS

Fixed Code with Dual-SIM Support #

Here's an updated version of your SmsReceiver that handles both SIM slots and includes critical logging to debug issues:

public class SmsReceiver extends BroadcastReceiver {
    private AppDBHelper db;

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i("receiveSMS", "SMS broadcast triggered");
        Bundle bundle = intent.getExtras();
        if (bundle == null) return;

        // Get SIM slot ID (critical for dual-SIM devices)
        int slotId = intent.getIntExtra("slot", -1);
        Log.i("receiveSMS", "Received message from SIM slot: " + slotId);

        Object[] pdus = (Object[]) bundle.get("pdus");
        if (pdus == null) return;

        db = new AppDBHelper(context);
        for (Object pdu : pdus) {
            SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) pdu);
            if (smsMessage == null) continue;

            String sender = smsMessage.getDisplayOriginatingAddress();
            String messageBody = smsMessage.getMessageBody();
            long timestamp = smsMessage.getTimestampMillis();

            // Store SMS with SIM slot ID for dual-SIM tracking
            db.insertSms(sender, messageBody, timestamp, slotId);
            Log.i("receiveSMS", "Saved SMS from " + sender + " (SIM " + slotId + ")");
        }
        db.close();
    }
}

Update Your Manifest & Permissions #

Make sure your receiver has high priority and correct permissions to beat other apps to the broadcast:

<!-- Declare permissions first -->
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />

<!-- Configure the receiver with high priority -->
<receiver
    android:name=".SmsReceiver"
    android:enabled="true"
    android:exported="true"
    android:priority="1000"> <!-- High priority ensures your app gets the broadcast first -->
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />
    </intent-filter>
</receiver>

Android 10+ Critical Fix #

On Android 10 (API 29) and above, static broadcast receivers for SMS are restricted unless your app is the default SMS app. If you don't want to set your app as default, switch to dynamic registration:

// Add this to your main Activity or Service
private SmsReceiver smsReceiver;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Request SMS permissions first (required for Android 6.0+)
    requestSmsPermissions();

    // Dynamically register the receiver
    smsReceiver = new SmsReceiver();
    IntentFilter filter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
    filter.setPriority(1000);
    registerReceiver(smsReceiver, filter);
}

@Override
protected void onDestroy() {
    super.onDestroy();
    // Don't forget to unregister to avoid memory leaks
    if (smsReceiver != null) {
        unregisterReceiver(smsReceiver);
    }
}

// Handle runtime permission request for Android 6.0+
private static final int REQUEST_SMS_PERMISSIONS = 100;
private void requestSmsPermissions() {
    String[] permissions = {Manifest.permission.RECEIVE_SMS, Manifest.permission.READ_SMS};
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECEIVE_SMS) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, permissions, REQUEST_SMS_PERMISSIONS);
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (requestCode == REQUEST_SMS_PERMISSIONS) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            Log.i("Permission", "SMS permissions granted - receiver ready");
        } else {
            Log.i("Permission", "SMS permissions denied - receiver won't work");
        }
    }
}

Testing Tips #

1. Send test SMS to both SIM cards and check Logcat for the receiveSMS tags
2. Verify that no other SMS apps are set as default (they can intercept broadcasts)
3. Ensure your app has the required runtime permissions enabled in Settings

内容的提问来源于stack exchange，提问作者BeginnerProgrammer