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Editorial Team
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Asked: 2026-05-24T23:48:13+00:00

I use BroadcastReceiver to intercept incoming call on Android phone as below tm =

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I use BroadcastReceiver to intercept incoming call on Android phone as below

tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
Bundle bundle = intent.getExtras();
String number = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);

In the “private number” case, I tested on two devices, it shows the number as -1 on HTC Wildfire and -2 on Galaxy S. I checked the android.telephony.PhoneNumberUtils but it could’t help me.

Is there a function or a generic way to detect a private number on Android phone?

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1 Answer

  1. Editorial Team

    You pretty much answered your own question. Private numbers are sent to the phone as -1 or -2. In my app I check for an integer value that is less than 0 and if it is, I treat it as a private number. This sounds like what you want to do as well.

    I hope my thoughts are helpful.

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