You can use a third-party app to increase your Android phone's volume beyond 100% if you need a little sound boost.

To control volume, clear all apps, press volume buttons, and slide levels for alarm, media, and call volumes. Guide works for Android 12 and later devices; audio control may vary slightly between ...

To increase volume on your Android phone or tablet beyond 100%, follow these steps: Download the volume booster app from the Play Store.