<uses-feature
        android:name="android.hardware.microphone"
        android:required="false"/>

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

and of course, somewhere in your BaseActivity requestPermission():
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getApplicationContext().bindService(new Intent(this, SinchService.class), this,
                BIND_AUTO_CREATE);

        if (!checkPermission()) {
            requestPermission();
            return;
        }
    }


    private void requestPermission() {
        requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE, RECORD_AUDIO, CAMERA, READ_PHONE_STATE}, RequestPermissionCode);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case RequestPermissionCode:
                if (grantResults.length > 0) {
                    boolean StoragePermission = grantResults[0] ==
                            PackageManager.PERMISSION_GRANTED;
                    boolean RecordPermission = grantResults[1] ==
                            PackageManager.PERMISSION_GRANTED;

                    if (StoragePermission && RecordPermission) {
                        Toast.makeText(this, "Permission Granted",
                                Toast.LENGTH_LONG).show();
                    } else {
                        Toast.makeText(this, "Permission Denied", Toast.LENGTH_LONG).show();
                    }
                }
                break;
        }
    }

    public boolean checkPermission() {
        int result = checkSelfPermission(WRITE_EXTERNAL_STORAGE);
        int result1 = checkSelfPermission(RECORD_AUDIO);
        return result == PackageManager.PERMISSION_GRANTED &&
                result1 == PackageManager.PERMISSION_GRANTED;
    }

    @Override
    public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
        if (SinchService.class.getName().equals(componentName.getClassName())) {
            mSinchServiceInterface = (SinchService.SinchServiceInterface) iBinder;
            onServiceConnected();
        }
    }

    @Override
    public void onServiceDisconnected(ComponentName componentName) {
        if (SinchService.class.getName().equals(componentName.getClassName())) {
            mSinchServiceInterface = null;
            onServiceDisconnected();
        }
    }

    protected void onServiceConnected() {
        // for subclasses
    }

    protected void onServiceDisconnected() {
        // for subclasses
    }

    protected SinchService.SinchServiceInterface getSinchServiceInterface() {
        return mSinchServiceInterface;
    }

}