Hi there! I understand you're experiencing a no-sound issue with Hightail on your iPhone. Let's work through this together to find a solution!

First, could you let me know if you're experiencing this issue across all content in Hightail, or is it specific to certain files? Also, have you had sound functionality in the app before, or is this a new issue?

While I wait for your response, here are a few steps we can try to troubleshoot the sound problem:

1. Check Mute Switch: Ensure that your iPhone's mute switch (on the side) is not turned on. If the orange line is visible, it's muted.

2. Volume Levels: Make sure the volume is turned up while playing a sound. You can do this by using the volume buttons on the side of your device.

3. Bluetooth Connections: Check if your iPhone is connected to any Bluetooth devices. Sometimes, sound might be routed to a connected speaker or headphones instead of the phone itself.

4. Restart the App: Close the Hightail app completely and then reopen it. This can help refresh any glitches.

5. Test Other Apps: Try playing sound from another app, like your music app or a video, to see if the issue is specific to Hightail.

Let me know how it goes, and if you still encounter the issue, we can dive into further troubleshooting!