There are several causes of why the volume goes down by itself on Android devices. In most cases, it's because of a stuck or malfunctioning volume button. And sometimes, it could result from software glitches, problematic apps, or user-defined settings.
Before we dive into the working solutions for the volume lowering problem on your Android phone, kindly note this: While playing music, it’s normal for your phone volume to reduce when you receive a notification.
Maybe it's a temporary system glitch. If your phone volume insists on decreasing itself after removing its cover and other attachments, we recommend you reboot your phone. Doing so will refresh the system, close all running processes and fix temporary system glitches.
If your phone volume misbehaves just recently or after installing an app, then you might want to check if an app caused the entire issue. For this, I recommend placing the device in Safe Mode. Safe mode lets your boot your Android phone in a clean and safe state, loading no third-party app.
Similar to removing problematic apps, ensure your phone is running the latest software. Sometimes, the bugs in your current OS version can pose many issues – just like the one you're experiencing now. However, updating your phone software can help regulate the issue.
If this does not help I recommend letting a service technician have a look.
You can use the following link to find a list of service centers in the U.S. that can do the repair:http://www.samsung.com/us/support/service/locationor by contacting customer support at 1-800-726-7864.
Samsung offers a variety of repair locations, including walk-in Samsung service centers. Select the product that needs service to find a location near you.
