Firebase push notifications custom sound
<p>I am currently working on an app and I have implement firebase Push Notification service into my app. I am recieving notification on my iphone but I am unable to set the custom alert sound that I want.</p>

<ul>
<li>I added the sound as a .caf</li>
<li>I added the sound to the <code>Copy Bundle Resources</code></li>
</ul>

<p>using <code>print (userInfo)</code> I have collected this data that is incomming from Firebase</p>

<pre><code>aps: {
alert =     {
    body = MSG;
    title = Title;
};
sound = default;}, {...}, sound: alarm.caf
</code></pre>

<p>I understand where the problem is, I just dont understand how to fix it so that the app plays my custom notification sound.</p>

<p><img src="https://i.stack.imgur.com/HtxBT.png" alt="Firebase notification console IMG"></p>