Not getting rssi after connecting to a ble peripheral simulated on an android device

I have two android devices: Device A and Device B. I am running a BLE Peripheral Simulator on device A. I am running the Device B in BLE Central mode. I also have a BLE Beacon. With Device B I can connect to the ble beacon and request for rssi

BluetoothGatt.readRemoteRssi()

But when I connect the Device A which is running a BLE Peripheral Simulator from Device B (which is in BLE Central mode) I and not able to get the proper rssi with the same function. Its giving 0 in

    @Override
    public void onReadRemoteRssi(BluetoothGatt gatt, int rssi, int status) {
        super.onReadRemoteRssi(gatt, rssi, status);
        Log.i(TAG, "onReadRemoteRssi: " + rssi);
    }