CONFLICT_NONE and CONFLICT_IGNORE still throw `android.database.sqlite.SQLiteConstraintException: column KEY_PHONE is not unique`

I want to a table on android:

phone table with primary key "id"

CREATE TABLE BLOCKED_PHONES_TABLE ( id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL DEFAULT 1, KEY_PHONE TEXT UNIQUE,KEY_IS_BLOCKED BIT )

I have tried to add value to KEY_PHONE TEXT UNIQUE twice

I tried this

public long addItem(Phone phone) {
    Log.d(Constants.LOGGER_TAG, "add saved-offer");
    // 1. get reference to writable DB
    SQLiteDatabase db = this.getWritableDatabase();

    // 2. create ContentValues to add key "column"/value
    ContentValues values = new ContentValues();
    //values.put(KEY_ID, phone.id);
    values.put(KEY_PHONE, phone.phone);
    values.put(KEY_IS_BLOCKED, phone.isBlocked);

    // 3. insert
    long newRowId =
            db.insertWithOnConflict(BLOCKED_PHONES_TABLE, KEY_ID,
            values, SQLiteDatabase.CONFLICT_NONE);

and this

    // 3. insert
    long newRowId =
            db.insertWithOnConflict(BLOCKED_PHONES_TABLE, KEY_ID,
            values, SQLiteDatabase.CONFLICT_IGNORE);

I saw the tutorial, but didn't understand what should work to my case

(not add new row if already KEY_PHONE with same val exist in other row)

and yet i get this unique constraint error.

  android.database.sqlite.SQLiteConstraintException: column KEY_PHONE is not unique (code 19)
            at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method)
            at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:972)
            at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788)
            at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86)
            at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1603)
            at com.example.stopcall.app.dal.PhoneDal.addItem(PhoneDal.java:69)
            at com.example.stopcall.app.fragments.ItemDetailFragment$2.onClick(ItemDetailFragment.java:84)
            at android.view.View.performClick(View.java:4654)
            at android.view.View$PerformClick.run(View.java:19438)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:146)
            at android.app.ActivityThread.main(ActivityThread.java:5602)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
            at dalvik.system.NativeStart.main(Native Method)