How do i integrate pubnub in mobile devices - reactjs

Question

i am trying to integarte pubnub(replacing socket.io withh pubnub).here below i have shown code.it is working fine for pc.but in mobile devices its not working .i am not getting error as well.any body can tel what i done wrong.
till now i have tried to replace socket with my pubnub connection
import PubNub from 'pubnub';
import { PubNubProvider, usePubNub } from 'pubnub-react';
const pubnub = new PubNub({
publishKey: 'xxxxxxxxxxxx',
subscribeKey: 'xxxxxxxxxxx'
});
//leave Table when close window
const closingCode = () => {
sendMsg("leaveTable");
return null;
};
class App extends Component {
constructor(props) {
super(props);
this.state = {
isOpen: false
};
this.receiveMsg = []
}
window.onbeforeunload = closingCode;
// Read res from service via Socket IO
// socket.on("message", receiveMsg);
socket.on("message", text => {
let params = text.split("|"); //.map(p => Base64.Decode(p)); // we are not using b64 now
let message = params.shift(); // message, eg. playerSitOut, clearTable
this.receiveMsg.push(message);
this.props.updateMessage({ message, params });
});
pubnub.addListener({ message: function (m) {
const channelName = m.channel; // Channel on which the message was published
const channelGroup = m.subscription; // Channel group or wildcard subscription match (if exists)
const pubTT = m.timetoken; // Publish timetoken
const msg = m.message; // Message payload
const publisher = m.publisher; // Message publisher/ } });
//pubnub.subscribe();
}