Expand iOS audio tips: silent, volume, Bluetooth

Covers the three most common reasons for no audio on iPhone.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

index.html

@@ -1192,7 +1192,7 @@
                 <div id="iosAudioBanner" class="ios-audio-banner" aria-live="polite">
                     <div class="row">
                         <div class="copy">
-                            <strong>iPhone:</strong> make sure you're not on silent, then tap to enable audio.
+                            <strong>iPhone:</strong> check not on silent, volume up, no Bluetooth. Then tap:
                         </div>
                         <button id="enableAudioBtn" type="button">Enable Audio</button>
                     </div>

play.html

@@ -362,7 +362,7 @@
 
         <!-- iOS Audio Unlock -->
         <div id="iosAudioBanner" class="ios-audio-banner">
-          <p>Make sure your iPhone is not on silent, then tap to enable audio.</p>
+          <p>Check: not on silent, volume up, no Bluetooth audio. Then tap:</p>
           <button id="enableAudioBtn" type="button">Enable Audio</button>
         </div>